20172880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1$

素因数の和:213

約数の個数: 160

約数和(自身を含む): 61496064

約数和(自身を除く): 41323184

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 17, 20, 26, 28, 34, 35, 40, 52, 56, 65, 68, 70, 80, 85, 91, 104, 112, 119, 130, 136, 140, 163, 170, 182, 208, 221, 238, 260, 272, 280, 326, 340, 364, 442, 455, 476, 520, 560, 595, 652, 680, 728, 815, 884, 910, 952, 1040, 1105, 1141, 1190, 1304, 1360, 1456, 1547, 1630, 1768, 1820, 1904, 2119, 2210, 2282, 2380, 2608, 2771, 3094, 3260, 3536, 3640, 4238, 4420, 4564, 4760, 5542, 5705, 6188, 6520, 7280, 7735, 8476, 8840, 9128, 9520, 10595, 11084, 11410, 12376, 13040, 13855, 14833, 15470, 16952, 17680, 18256, 19397, 21190, 22168, 22820, 24752, 27710, 29666, 30940, 33904, 36023, 38794, 42380, 44336, 45640, 55420, 59332, 61880, 72046, 74165, 77588, 84760, 91280, 96985, 110840, 118664, 123760, 144092, 148330, 155176, 169520, 180115, 193970, 221680, 237328, 252161, 288184, 296660, 310352, 360230, 387940, 504322, 576368, 593320, 720460, 775880, 1008644, 1186640, 1260805, 1440920, 1551760, 2017288, 2521610, 2881840, 4034576, 5043220, 10086440, 20172880]

約数ペア:

[(1, 20172880), (2, 10086440), (4, 5043220), (5, 4034576), (7, 2881840), (8, 2521610), (10, 2017288), (13, 1551760), (14, 1440920), (16, 1260805), (17, 1186640), (20, 1008644), (26, 775880), (28, 720460), (34, 593320), (35, 576368), (40, 504322), (52, 387940), (56, 360230), (65, 310352), (68, 296660), (70, 288184), (80, 252161), (85, 237328), (91, 221680), (104, 193970), (112, 180115), (119, 169520), (130, 155176), (136, 148330), (140, 144092), (163, 123760), (170, 118664), (182, 110840), (208, 96985), (221, 91280), (238, 84760), (260, 77588), (272, 74165), (280, 72046), (326, 61880), (340, 59332), (364, 55420), (442, 45640), (455, 44336), (476, 42380), (520, 38794), (560, 36023), (595, 33904), (652, 30940), (680, 29666), (728, 27710), (815, 24752), (884, 22820), (910, 22168), (952, 21190), (1040, 19397), (1105, 18256), (1141, 17680), (1190, 16952), (1304, 15470), (1360, 14833), (1456, 13855), (1547, 13040), (1630, 12376), (1768, 11410), (1820, 11084), (1904, 10595), (2119, 9520), (2210, 9128), (2282, 8840), (2380, 8476), (2608, 7735), (2771, 7280), (3094, 6520), (3260, 6188), (3536, 5705), (3640, 5542), (4238, 4760), (4420, 4564)]