21706620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1637}}^1$

素因数の和:1679

約数の個数: 96

約数和(自身を含む): 69346368

約数和(自身を除く): 47639748

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, 1637, 2210, 2652, 3274, 3315, 4420, 4911, 6548, 6630, 8185, 9822, 13260, 16370, 19644, 21281, 24555, 27829, 32740, 42562, 49110, 55658, 63843, 83487, 85124, 98220, 106405, 111316, 127686, 139145, 166974, 212810, 255372, 278290, 319215, 333948, 361777, 417435, 425620, 556580, 638430, 723554, 834870, 1085331, 1276860, 1447108, 1669740, 1808885, 2170662, 3617770, 4341324, 5426655, 7235540, 10853310, 21706620]

約数ペア:

[(1, 21706620), (2, 10853310), (3, 7235540), (4, 5426655), (5, 4341324), (6, 3617770), (10, 2170662), (12, 1808885), (13, 1669740), (15, 1447108), (17, 1276860), (20, 1085331), (26, 834870), (30, 723554), (34, 638430), (39, 556580), (51, 425620), (52, 417435), (60, 361777), (65, 333948), (68, 319215), (78, 278290), (85, 255372), (102, 212810), (130, 166974), (156, 139145), (170, 127686), (195, 111316), (204, 106405), (221, 98220), (255, 85124), (260, 83487), (340, 63843), (390, 55658), (442, 49110), (510, 42562), (663, 32740), (780, 27829), (884, 24555), (1020, 21281), (1105, 19644), (1326, 16370), (1637, 13260), (2210, 9822), (2652, 8185), (3274, 6630), (3315, 6548), (4420, 4911)]