20400510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{181}}^1$

素因数の和:238

約数の個数: 96

約数和(自身を含む): 56320992

約数和(自身を除く): 35920482

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 26, 30, 34, 39, 51, 65, 78, 85, 102, 130, 170, 181, 195, 221, 255, 289, 362, 390, 442, 510, 543, 578, 663, 867, 905, 1086, 1105, 1326, 1445, 1734, 1810, 2210, 2353, 2715, 2890, 3077, 3315, 3757, 4335, 4706, 5430, 6154, 6630, 7059, 7514, 8670, 9231, 11271, 11765, 14118, 15385, 18462, 18785, 22542, 23530, 30770, 35295, 37570, 40001, 46155, 52309, 56355, 70590, 80002, 92310, 104618, 112710, 120003, 156927, 200005, 240006, 261545, 313854, 400010, 523090, 600015, 680017, 784635, 1200030, 1360034, 1569270, 2040051, 3400085, 4080102, 6800170, 10200255, 20400510]

約数ペア:

[(1, 20400510), (2, 10200255), (3, 6800170), (5, 4080102), (6, 3400085), (10, 2040051), (13, 1569270), (15, 1360034), (17, 1200030), (26, 784635), (30, 680017), (34, 600015), (39, 523090), (51, 400010), (65, 313854), (78, 261545), (85, 240006), (102, 200005), (130, 156927), (170, 120003), (181, 112710), (195, 104618), (221, 92310), (255, 80002), (289, 70590), (362, 56355), (390, 52309), (442, 46155), (510, 40001), (543, 37570), (578, 35295), (663, 30770), (867, 23530), (905, 22542), (1086, 18785), (1105, 18462), (1326, 15385), (1445, 14118), (1734, 11765), (1810, 11271), (2210, 9231), (2353, 8670), (2715, 7514), (2890, 7059), (3077, 6630), (3315, 6154), (3757, 5430), (4335, 4706)]