686454940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:391

約数の個数: 96

約数和(自身を含む): 1539881280

約数和(自身を除く): 853426340

約数列:

[1, 2, 4, 5, 10, 20, 29, 53, 58, 106, 116, 137, 145, 163, 212, 265, 274, 290, 326, 530, 548, 580, 652, 685, 815, 1060, 1370, 1537, 1630, 2740, 3074, 3260, 3973, 4727, 6148, 7261, 7685, 7946, 8639, 9454, 14522, 15370, 15892, 17278, 18908, 19865, 22331, 23635, 29044, 30740, 34556, 36305, 39730, 43195, 44662, 47270, 72610, 79460, 86390, 89324, 94540, 111655, 145220, 172780, 210569, 223310, 250531, 421138, 446620, 501062, 647599, 842276, 1002124, 1052845, 1183543, 1252655, 1295198, 2105690, 2367086, 2505310, 2590396, 3237995, 4211380, 4734172, 5010620, 5917715, 6475990, 11835430, 12951980, 23670860, 34322747, 68645494, 137290988, 171613735, 343227470, 686454940]

約数ペア:

[(1, 686454940), (2, 343227470), (4, 171613735), (5, 137290988), (10, 68645494), (20, 34322747), (29, 23670860), (53, 12951980), (58, 11835430), (106, 6475990), (116, 5917715), (137, 5010620), (145, 4734172), (163, 4211380), (212, 3237995), (265, 2590396), (274, 2505310), (290, 2367086), (326, 2105690), (530, 1295198), (548, 1252655), (580, 1183543), (652, 1052845), (685, 1002124), (815, 842276), (1060, 647599), (1370, 501062), (1537, 446620), (1630, 421138), (2740, 250531), (3074, 223310), (3260, 210569), (3973, 172780), (4727, 145220), (6148, 111655), (7261, 94540), (7685, 89324), (7946, 86390), (8639, 79460), (9454, 72610), (14522, 47270), (15370, 44662), (15892, 43195), (17278, 39730), (18908, 36305), (19865, 34556), (22331, 30740), (23635, 29044)]