28890120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:395

約数の個数: 128

約数和(自身を含む): 100131840

約数和(自身を除く): 71241720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 163, 168, 210, 211, 280, 326, 420, 422, 489, 633, 652, 815, 840, 844, 978, 1055, 1141, 1266, 1304, 1477, 1630, 1688, 1956, 2110, 2282, 2445, 2532, 2954, 3165, 3260, 3423, 3912, 4220, 4431, 4564, 4890, 5064, 5705, 5908, 6330, 6520, 6846, 7385, 8440, 8862, 9128, 9780, 11410, 11816, 12660, 13692, 14770, 17115, 17724, 19560, 22155, 22820, 25320, 27384, 29540, 34230, 34393, 35448, 44310, 45640, 59080, 68460, 68786, 88620, 103179, 136920, 137572, 171965, 177240, 206358, 240751, 275144, 343930, 412716, 481502, 515895, 687860, 722253, 825432, 963004, 1031790, 1203755, 1375720, 1444506, 1926008, 2063580, 2407510, 2889012, 3611265, 4127160, 4815020, 5778024, 7222530, 9630040, 14445060, 28890120]

約数ペア:

[(1, 28890120), (2, 14445060), (3, 9630040), (4, 7222530), (5, 5778024), (6, 4815020), (7, 4127160), (8, 3611265), (10, 2889012), (12, 2407510), (14, 2063580), (15, 1926008), (20, 1444506), (21, 1375720), (24, 1203755), (28, 1031790), (30, 963004), (35, 825432), (40, 722253), (42, 687860), (56, 515895), (60, 481502), (70, 412716), (84, 343930), (105, 275144), (120, 240751), (140, 206358), (163, 177240), (168, 171965), (210, 137572), (211, 136920), (280, 103179), (326, 88620), (420, 68786), (422, 68460), (489, 59080), (633, 45640), (652, 44310), (815, 35448), (840, 34393), (844, 34230), (978, 29540), (1055, 27384), (1141, 25320), (1266, 22820), (1304, 22155), (1477, 19560), (1630, 17724), (1688, 17115), (1956, 14770), (2110, 13692), (2282, 12660), (2445, 11816), (2532, 11410), (2954, 9780), (3165, 9128), (3260, 8862), (3423, 8440), (3912, 7385), (4220, 6846), (4431, 6520), (4564, 6330), (4890, 5908), (5064, 5705)]