20454420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1571}}^1$

素因数の和:1621

約数の個数: 96

約数和(自身を含む): 67608576

約数和(自身を除く): 47154156

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 62, 70, 84, 93, 105, 124, 140, 155, 186, 210, 217, 310, 372, 420, 434, 465, 620, 651, 868, 930, 1085, 1302, 1571, 1860, 2170, 2604, 3142, 3255, 4340, 4713, 6284, 6510, 7855, 9426, 10997, 13020, 15710, 18852, 21994, 23565, 31420, 32991, 43988, 47130, 48701, 54985, 65982, 94260, 97402, 109970, 131964, 146103, 164955, 194804, 219940, 243505, 292206, 329910, 340907, 487010, 584412, 659820, 681814, 730515, 974020, 1022721, 1363628, 1461030, 1704535, 2045442, 2922060, 3409070, 4090884, 5113605, 6818140, 10227210, 20454420]

約数ペア:

[(1, 20454420), (2, 10227210), (3, 6818140), (4, 5113605), (5, 4090884), (6, 3409070), (7, 2922060), (10, 2045442), (12, 1704535), (14, 1461030), (15, 1363628), (20, 1022721), (21, 974020), (28, 730515), (30, 681814), (31, 659820), (35, 584412), (42, 487010), (60, 340907), (62, 329910), (70, 292206), (84, 243505), (93, 219940), (105, 194804), (124, 164955), (140, 146103), (155, 131964), (186, 109970), (210, 97402), (217, 94260), (310, 65982), (372, 54985), (420, 48701), (434, 47130), (465, 43988), (620, 32991), (651, 31420), (868, 23565), (930, 21994), (1085, 18852), (1302, 15710), (1571, 13020), (1860, 10997), (2170, 9426), (2604, 7855), (3142, 6510), (3255, 6284), (4340, 4713)]