20537640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{641}}^1$

素因数の和:747

約数の個数: 96

約数和(自身を含む): 67602600

約数和(自身を除く): 47064960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 89, 90, 120, 178, 180, 267, 356, 360, 445, 534, 641, 712, 801, 890, 1068, 1282, 1335, 1602, 1780, 1923, 2136, 2564, 2670, 3204, 3205, 3560, 3846, 4005, 5128, 5340, 5769, 6408, 6410, 7692, 8010, 9615, 10680, 11538, 12820, 15384, 16020, 19230, 23076, 25640, 28845, 32040, 38460, 46152, 57049, 57690, 76920, 114098, 115380, 171147, 228196, 230760, 285245, 342294, 456392, 513441, 570490, 684588, 855735, 1026882, 1140980, 1369176, 1711470, 2053764, 2281960, 2567205, 3422940, 4107528, 5134410, 6845880, 10268820, 20537640]

約数ペア:

[(1, 20537640), (2, 10268820), (3, 6845880), (4, 5134410), (5, 4107528), (6, 3422940), (8, 2567205), (9, 2281960), (10, 2053764), (12, 1711470), (15, 1369176), (18, 1140980), (20, 1026882), (24, 855735), (30, 684588), (36, 570490), (40, 513441), (45, 456392), (60, 342294), (72, 285245), (89, 230760), (90, 228196), (120, 171147), (178, 115380), (180, 114098), (267, 76920), (356, 57690), (360, 57049), (445, 46152), (534, 38460), (641, 32040), (712, 28845), (801, 25640), (890, 23076), (1068, 19230), (1282, 16020), (1335, 15384), (1602, 12820), (1780, 11538), (1923, 10680), (2136, 9615), (2564, 8010), (2670, 7692), (3204, 6410), (3205, 6408), (3560, 5769), (3846, 5340), (4005, 5128)]