20296920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{331}}^1$

素因数の和:425

約数の個数: 128

約数和(自身を含む): 70755840

約数和(自身を除く): 50458920

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, 73, 84, 105, 120, 140, 146, 168, 210, 219, 280, 292, 331, 365, 420, 438, 511, 584, 662, 730, 840, 876, 993, 1022, 1095, 1324, 1460, 1533, 1655, 1752, 1986, 2044, 2190, 2317, 2555, 2648, 2920, 3066, 3310, 3972, 4088, 4380, 4634, 4965, 5110, 6132, 6620, 6951, 7665, 7944, 8760, 9268, 9930, 10220, 11585, 12264, 13240, 13902, 15330, 18536, 19860, 20440, 23170, 24163, 27804, 30660, 34755, 39720, 46340, 48326, 55608, 61320, 69510, 72489, 92680, 96652, 120815, 139020, 144978, 169141, 193304, 241630, 278040, 289956, 338282, 362445, 483260, 507423, 579912, 676564, 724890, 845705, 966520, 1014846, 1353128, 1449780, 1691410, 2029692, 2537115, 2899560, 3382820, 4059384, 5074230, 6765640, 10148460, 20296920]

約数ペア:

[(1, 20296920), (2, 10148460), (3, 6765640), (4, 5074230), (5, 4059384), (6, 3382820), (7, 2899560), (8, 2537115), (10, 2029692), (12, 1691410), (14, 1449780), (15, 1353128), (20, 1014846), (21, 966520), (24, 845705), (28, 724890), (30, 676564), (35, 579912), (40, 507423), (42, 483260), (56, 362445), (60, 338282), (70, 289956), (73, 278040), (84, 241630), (105, 193304), (120, 169141), (140, 144978), (146, 139020), (168, 120815), (210, 96652), (219, 92680), (280, 72489), (292, 69510), (331, 61320), (365, 55608), (420, 48326), (438, 46340), (511, 39720), (584, 34755), (662, 30660), (730, 27804), (840, 24163), (876, 23170), (993, 20440), (1022, 19860), (1095, 18536), (1324, 15330), (1460, 13902), (1533, 13240), (1655, 12264), (1752, 11585), (1986, 10220), (2044, 9930), (2190, 9268), (2317, 8760), (2555, 7944), (2648, 7665), (2920, 6951), (3066, 6620), (3310, 6132), (3972, 5110), (4088, 4965), (4380, 4634)]