21971820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1657}}^1$

素因数の和:1699

約数の個数: 96

約数和(自身を含む): 70193088

約数和(自身を除く): 48221268

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 1657, 2210, 2652, 3314, 3315, 4420, 4971, 6628, 6630, 8285, 9942, 13260, 16570, 19884, 21541, 24855, 28169, 33140, 43082, 49710, 56338, 64623, 84507, 86164, 99420, 107705, 112676, 129246, 140845, 169014, 215410, 258492, 281690, 323115, 338028, 366197, 422535, 430820, 563380, 646230, 732394, 845070, 1098591, 1292460, 1464788, 1690140, 1830985, 2197182, 3661970, 4394364, 5492955, 7323940, 10985910, 21971820]

約数ペア:

[(1, 21971820), (2, 10985910), (3, 7323940), (4, 5492955), (5, 4394364), (6, 3661970), (10, 2197182), (12, 1830985), (13, 1690140), (15, 1464788), (17, 1292460), (20, 1098591), (26, 845070), (30, 732394), (34, 646230), (39, 563380), (51, 430820), (52, 422535), (60, 366197), (65, 338028), (68, 323115), (78, 281690), (85, 258492), (102, 215410), (130, 169014), (156, 140845), (170, 129246), (195, 112676), (204, 107705), (221, 99420), (255, 86164), (260, 84507), (340, 64623), (390, 56338), (442, 49710), (510, 43082), (663, 33140), (780, 28169), (884, 24855), (1020, 21541), (1105, 19884), (1326, 16570), (1657, 13260), (2210, 9942), (2652, 8285), (3314, 6630), (3315, 6628), (4420, 4971)]