20137520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1$

素因数の和:127

約数の個数: 120

約数和(自身を含む): 54361104

約数和(自身を除く): 34223584

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 67, 68, 80, 85, 104, 130, 134, 136, 170, 208, 221, 260, 268, 272, 289, 335, 340, 442, 520, 536, 578, 670, 680, 871, 884, 1040, 1072, 1105, 1139, 1156, 1340, 1360, 1445, 1742, 1768, 2210, 2278, 2312, 2680, 2890, 3484, 3536, 3757, 4355, 4420, 4556, 4624, 5360, 5695, 5780, 6968, 7514, 8710, 8840, 9112, 11390, 11560, 13936, 14807, 15028, 17420, 17680, 18224, 18785, 19363, 22780, 23120, 29614, 30056, 34840, 37570, 38726, 45560, 59228, 60112, 69680, 74035, 75140, 77452, 91120, 96815, 118456, 148070, 150280, 154904, 193630, 236912, 251719, 296140, 300560, 309808, 387260, 503438, 592280, 774520, 1006876, 1184560, 1258595, 1549040, 2013752, 2517190, 4027504, 5034380, 10068760, 20137520]

約数ペア:

[(1, 20137520), (2, 10068760), (4, 5034380), (5, 4027504), (8, 2517190), (10, 2013752), (13, 1549040), (16, 1258595), (17, 1184560), (20, 1006876), (26, 774520), (34, 592280), (40, 503438), (52, 387260), (65, 309808), (67, 300560), (68, 296140), (80, 251719), (85, 236912), (104, 193630), (130, 154904), (134, 150280), (136, 148070), (170, 118456), (208, 96815), (221, 91120), (260, 77452), (268, 75140), (272, 74035), (289, 69680), (335, 60112), (340, 59228), (442, 45560), (520, 38726), (536, 37570), (578, 34840), (670, 30056), (680, 29614), (871, 23120), (884, 22780), (1040, 19363), (1072, 18785), (1105, 18224), (1139, 17680), (1156, 17420), (1340, 15028), (1360, 14807), (1445, 13936), (1742, 11560), (1768, 11390), (2210, 9112), (2278, 8840), (2312, 8710), (2680, 7514), (2890, 6968), (3484, 5780), (3536, 5695), (3757, 5360), (4355, 4624), (4420, 4556)]