81663400

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:684

約数の個数: 144

約数和(自身を含む): 238226940

約数和(自身を除く): 156563540

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 25, 26, 28, 35, 40, 49, 50, 52, 56, 65, 70, 91, 98, 100, 104, 130, 140, 175, 182, 196, 200, 245, 260, 280, 325, 350, 364, 392, 455, 490, 520, 637, 641, 650, 700, 728, 910, 980, 1225, 1274, 1282, 1300, 1400, 1820, 1960, 2275, 2450, 2548, 2564, 2600, 3185, 3205, 3640, 4487, 4550, 4900, 5096, 5128, 6370, 6410, 8333, 8974, 9100, 9800, 12740, 12820, 15925, 16025, 16666, 17948, 18200, 22435, 25480, 25640, 31409, 31850, 32050, 33332, 35896, 41665, 44870, 58331, 62818, 63700, 64100, 66664, 83330, 89740, 112175, 116662, 125636, 127400, 128200, 157045, 166660, 179480, 208325, 224350, 233324, 251272, 291655, 314090, 333320, 408317, 416650, 448700, 466648, 583310, 628180, 785225, 816634, 833300, 897400, 1166620, 1256360, 1458275, 1570450, 1633268, 1666600, 2041585, 2333240, 2916550, 3140900, 3266536, 4083170, 5833100, 6281800, 8166340, 10207925, 11666200, 16332680, 20415850, 40831700, 81663400]

約数ペア:

[(1, 81663400), (2, 40831700), (4, 20415850), (5, 16332680), (7, 11666200), (8, 10207925), (10, 8166340), (13, 6281800), (14, 5833100), (20, 4083170), (25, 3266536), (26, 3140900), (28, 2916550), (35, 2333240), (40, 2041585), (49, 1666600), (50, 1633268), (52, 1570450), (56, 1458275), (65, 1256360), (70, 1166620), (91, 897400), (98, 833300), (100, 816634), (104, 785225), (130, 628180), (140, 583310), (175, 466648), (182, 448700), (196, 416650), (200, 408317), (245, 333320), (260, 314090), (280, 291655), (325, 251272), (350, 233324), (364, 224350), (392, 208325), (455, 179480), (490, 166660), (520, 157045), (637, 128200), (641, 127400), (650, 125636), (700, 116662), (728, 112175), (910, 89740), (980, 83330), (1225, 66664), (1274, 64100), (1282, 63700), (1300, 62818), (1400, 58331), (1820, 44870), (1960, 41665), (2275, 35896), (2450, 33332), (2548, 32050), (2564, 31850), (2600, 31409), (3185, 25640), (3205, 25480), (3640, 22435), (4487, 18200), (4550, 17948), (4900, 16666), (5096, 16025), (5128, 15925), (6370, 12820), (6410, 12740), (8333, 9800), (8974, 9100)]