19863820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1579}}^1$

素因数の和:1642

約数の個数: 48

約数和(自身を含む): 45390240

約数和(自身を除く): 25526420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 37, 68, 74, 85, 148, 170, 185, 340, 370, 629, 740, 1258, 1579, 2516, 3145, 3158, 6290, 6316, 7895, 12580, 15790, 26843, 31580, 53686, 58423, 107372, 116846, 134215, 233692, 268430, 292115, 536860, 584230, 993191, 1168460, 1986382, 3972764, 4965955, 9931910, 19863820]

約数ペア:

[(1, 19863820), (2, 9931910), (4, 4965955), (5, 3972764), (10, 1986382), (17, 1168460), (20, 993191), (34, 584230), (37, 536860), (68, 292115), (74, 268430), (85, 233692), (148, 134215), (170, 116846), (185, 107372), (340, 58423), (370, 53686), (629, 31580), (740, 26843), (1258, 15790), (1579, 12580), (2516, 7895), (3145, 6316), (3158, 6290)]