81451860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:270

約数の個数: 192

約数和(自身を含む): 280627200

約数和(自身を除く): 199175340

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 59, 60, 70, 76, 84, 95, 105, 114, 118, 133, 140, 173, 177, 190, 210, 228, 236, 266, 285, 295, 346, 354, 380, 399, 413, 420, 519, 532, 570, 590, 665, 692, 708, 798, 826, 865, 885, 1038, 1121, 1140, 1180, 1211, 1239, 1330, 1596, 1652, 1730, 1770, 1995, 2065, 2076, 2242, 2422, 2478, 2595, 2660, 3287, 3363, 3460, 3540, 3633, 3990, 4130, 4484, 4844, 4956, 5190, 5605, 6055, 6195, 6574, 6726, 7266, 7847, 7980, 8260, 9861, 10207, 10380, 11210, 12110, 12390, 13148, 13452, 14532, 15694, 16435, 16815, 18165, 19722, 20414, 22420, 23009, 23541, 24220, 24780, 30621, 31388, 32870, 33630, 36330, 39235, 39444, 40828, 46018, 47082, 49305, 51035, 61242, 65740, 67260, 69027, 71449, 72660, 78470, 92036, 94164, 98610, 102070, 115045, 117705, 122484, 138054, 142898, 153105, 156940, 193933, 197220, 204140, 214347, 230090, 235410, 276108, 285796, 306210, 345135, 357245, 387866, 428694, 460180, 470820, 581799, 612420, 690270, 714490, 775732, 857388, 969665, 1071735, 1163598, 1357531, 1380540, 1428980, 1939330, 2143470, 2327196, 2715062, 2908995, 3878660, 4072593, 4286940, 5430124, 5817990, 6787655, 8145186, 11635980, 13575310, 16290372, 20362965, 27150620, 40725930, 81451860]

約数ペア:

[(1, 81451860), (2, 40725930), (3, 27150620), (4, 20362965), (5, 16290372), (6, 13575310), (7, 11635980), (10, 8145186), (12, 6787655), (14, 5817990), (15, 5430124), (19, 4286940), (20, 4072593), (21, 3878660), (28, 2908995), (30, 2715062), (35, 2327196), (38, 2143470), (42, 1939330), (57, 1428980), (59, 1380540), (60, 1357531), (70, 1163598), (76, 1071735), (84, 969665), (95, 857388), (105, 775732), (114, 714490), (118, 690270), (133, 612420), (140, 581799), (173, 470820), (177, 460180), (190, 428694), (210, 387866), (228, 357245), (236, 345135), (266, 306210), (285, 285796), (295, 276108), (346, 235410), (354, 230090), (380, 214347), (399, 204140), (413, 197220), (420, 193933), (519, 156940), (532, 153105), (570, 142898), (590, 138054), (665, 122484), (692, 117705), (708, 115045), (798, 102070), (826, 98610), (865, 94164), (885, 92036), (1038, 78470), (1121, 72660), (1140, 71449), (1180, 69027), (1211, 67260), (1239, 65740), (1330, 61242), (1596, 51035), (1652, 49305), (1730, 47082), (1770, 46018), (1995, 40828), (2065, 39444), (2076, 39235), (2242, 36330), (2422, 33630), (2478, 32870), (2595, 31388), (2660, 30621), (3287, 24780), (3363, 24220), (3460, 23541), (3540, 23009), (3633, 22420), (3990, 20414), (4130, 19722), (4484, 18165), (4844, 16815), (4956, 16435), (5190, 15694), (5605, 14532), (6055, 13452), (6195, 13148), (6574, 12390), (6726, 12110), (7266, 11210), (7847, 10380), (7980, 10207), (8260, 9861)]