251392640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12671}}^1$

素因数の和:12721

約数の個数: 64

約数和(自身を含む): 620421120

約数和(自身を除く): 369028480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 12671, 19840, 25342, 50684, 63355, 101368, 126710, 202736, 253420, 392801, 405472, 506840, 785602, 810944, 1013680, 1571204, 1621888, 1964005, 2027360, 3142408, 3928010, 4054720, 6284816, 7856020, 8109440, 12569632, 15712040, 25139264, 31424080, 50278528, 62848160, 125696320, 251392640]

約数ペア:

[(1, 251392640), (2, 125696320), (4, 62848160), (5, 50278528), (8, 31424080), (10, 25139264), (16, 15712040), (20, 12569632), (31, 8109440), (32, 7856020), (40, 6284816), (62, 4054720), (64, 3928010), (80, 3142408), (124, 2027360), (128, 1964005), (155, 1621888), (160, 1571204), (248, 1013680), (310, 810944), (320, 785602), (496, 506840), (620, 405472), (640, 392801), (992, 253420), (1240, 202736), (1984, 126710), (2480, 101368), (3968, 63355), (4960, 50684), (9920, 25342), (12671, 19840)]