637980

素因数分解:

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

素因数の和:64

約数の個数: 96

約数和(自身を含む): 2150400

約数和(自身を除く): 1512420

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 245, 294, 310, 343, 372, 420, 434, 465, 490, 588, 620, 651, 686, 735, 868, 930, 980, 1029, 1085, 1302, 1372, 1470, 1519, 1715, 1860, 2058, 2170, 2604, 2940, 3038, 3255, 3430, 4116, 4340, 4557, 5145, 6076, 6510, 6860, 7595, 9114, 10290, 10633, 13020, 15190, 18228, 20580, 21266, 22785, 30380, 31899, 42532, 45570, 53165, 63798, 91140, 106330, 127596, 159495, 212660, 318990, 637980]

約数ペア:

[(1, 637980), (2, 318990), (3, 212660), (4, 159495), (5, 127596), (6, 106330), (7, 91140), (10, 63798), (12, 53165), (14, 45570), (15, 42532), (20, 31899), (21, 30380), (28, 22785), (30, 21266), (31, 20580), (35, 18228), (42, 15190), (49, 13020), (60, 10633), (62, 10290), (70, 9114), (84, 7595), (93, 6860), (98, 6510), (105, 6076), (124, 5145), (140, 4557), (147, 4340), (155, 4116), (186, 3430), (196, 3255), (210, 3038), (217, 2940), (245, 2604), (294, 2170), (310, 2058), (343, 1860), (372, 1715), (420, 1519), (434, 1470), (465, 1372), (490, 1302), (588, 1085), (620, 1029), (651, 980), (686, 930), (735, 868)]