20257380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{787}}^1$

素因数の和:826

約数の個数: 144

約数和(自身を含む): 72281664

約数和(自身を除く): 52024284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 60, 65, 66, 78, 90, 99, 110, 117, 130, 132, 143, 156, 165, 180, 195, 198, 220, 234, 260, 286, 330, 390, 396, 429, 468, 495, 572, 585, 660, 715, 780, 787, 858, 990, 1170, 1287, 1430, 1574, 1716, 1980, 2145, 2340, 2361, 2574, 2860, 3148, 3935, 4290, 4722, 5148, 6435, 7083, 7870, 8580, 8657, 9444, 10231, 11805, 12870, 14166, 15740, 17314, 20462, 23610, 25740, 25971, 28332, 30693, 34628, 35415, 40924, 43285, 47220, 51155, 51942, 61386, 70830, 77913, 86570, 92079, 102310, 103884, 112541, 122772, 129855, 141660, 153465, 155826, 173140, 184158, 204620, 225082, 259710, 306930, 311652, 337623, 368316, 389565, 450164, 460395, 519420, 562705, 613860, 675246, 779130, 920790, 1012869, 1125410, 1350492, 1558260, 1688115, 1841580, 2025738, 2250820, 3376230, 4051476, 5064345, 6752460, 10128690, 20257380]

約数ペア:

[(1, 20257380), (2, 10128690), (3, 6752460), (4, 5064345), (5, 4051476), (6, 3376230), (9, 2250820), (10, 2025738), (11, 1841580), (12, 1688115), (13, 1558260), (15, 1350492), (18, 1125410), (20, 1012869), (22, 920790), (26, 779130), (30, 675246), (33, 613860), (36, 562705), (39, 519420), (44, 460395), (45, 450164), (52, 389565), (55, 368316), (60, 337623), (65, 311652), (66, 306930), (78, 259710), (90, 225082), (99, 204620), (110, 184158), (117, 173140), (130, 155826), (132, 153465), (143, 141660), (156, 129855), (165, 122772), (180, 112541), (195, 103884), (198, 102310), (220, 92079), (234, 86570), (260, 77913), (286, 70830), (330, 61386), (390, 51942), (396, 51155), (429, 47220), (468, 43285), (495, 40924), (572, 35415), (585, 34628), (660, 30693), (715, 28332), (780, 25971), (787, 25740), (858, 23610), (990, 20462), (1170, 17314), (1287, 15740), (1430, 14166), (1574, 12870), (1716, 11805), (1980, 10231), (2145, 9444), (2340, 8657), (2361, 8580), (2574, 7870), (2860, 7083), (3148, 6435), (3935, 5148), (4290, 4722)]