28156920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:365

約数の個数: 128

約数和(自身を含む): 93623040

約数和(自身を除く): 65466120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 83, 88, 110, 120, 132, 165, 166, 220, 249, 257, 264, 330, 332, 415, 440, 498, 514, 660, 664, 771, 830, 913, 996, 1028, 1245, 1285, 1320, 1542, 1660, 1826, 1992, 2056, 2490, 2570, 2739, 2827, 3084, 3320, 3652, 3855, 4565, 4980, 5140, 5478, 5654, 6168, 7304, 7710, 8481, 9130, 9960, 10280, 10956, 11308, 13695, 14135, 15420, 16962, 18260, 21331, 21912, 22616, 27390, 28270, 30840, 33924, 36520, 42405, 42662, 54780, 56540, 63993, 67848, 84810, 85324, 106655, 109560, 113080, 127986, 169620, 170648, 213310, 234641, 255972, 319965, 339240, 426620, 469282, 511944, 639930, 703923, 853240, 938564, 1173205, 1279860, 1407846, 1877128, 2346410, 2559720, 2815692, 3519615, 4692820, 5631384, 7039230, 9385640, 14078460, 28156920]

約数ペア:

[(1, 28156920), (2, 14078460), (3, 9385640), (4, 7039230), (5, 5631384), (6, 4692820), (8, 3519615), (10, 2815692), (11, 2559720), (12, 2346410), (15, 1877128), (20, 1407846), (22, 1279860), (24, 1173205), (30, 938564), (33, 853240), (40, 703923), (44, 639930), (55, 511944), (60, 469282), (66, 426620), (83, 339240), (88, 319965), (110, 255972), (120, 234641), (132, 213310), (165, 170648), (166, 169620), (220, 127986), (249, 113080), (257, 109560), (264, 106655), (330, 85324), (332, 84810), (415, 67848), (440, 63993), (498, 56540), (514, 54780), (660, 42662), (664, 42405), (771, 36520), (830, 33924), (913, 30840), (996, 28270), (1028, 27390), (1245, 22616), (1285, 21912), (1320, 21331), (1542, 18260), (1660, 16962), (1826, 15420), (1992, 14135), (2056, 13695), (2490, 11308), (2570, 10956), (2739, 10280), (2827, 9960), (3084, 9130), (3320, 8481), (3652, 7710), (3855, 7304), (4565, 6168), (4980, 5654), (5140, 5478)]