21287630

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:333

約数の個数: 64

約数和(自身を含む): 47779200

約数和(自身を除く): 26491570

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 149, 157, 182, 298, 314, 455, 745, 785, 910, 1043, 1099, 1490, 1570, 1937, 2041, 2086, 2198, 3874, 4082, 5215, 5495, 9685, 10205, 10430, 10990, 13559, 14287, 19370, 20410, 23393, 27118, 28574, 46786, 67795, 71435, 116965, 135590, 142870, 163751, 233930, 304109, 327502, 608218, 818755, 1520545, 1637510, 2128763, 3041090, 4257526, 10643815, 21287630]

約数ペア:

[(1, 21287630), (2, 10643815), (5, 4257526), (7, 3041090), (10, 2128763), (13, 1637510), (14, 1520545), (26, 818755), (35, 608218), (65, 327502), (70, 304109), (91, 233930), (130, 163751), (149, 142870), (157, 135590), (182, 116965), (298, 71435), (314, 67795), (455, 46786), (745, 28574), (785, 27118), (910, 23393), (1043, 20410), (1099, 19370), (1490, 14287), (1570, 13559), (1937, 10990), (2041, 10430), (2086, 10205), (2198, 9685), (3874, 5495), (4082, 5215)]