251623280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1\times {\mathrm{421}}^1$

素因数の和:706

約数の個数: 80

約数和(自身を含む): 607842048

約数和(自身を除く): 356218768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 241, 248, 310, 421, 482, 496, 620, 842, 964, 1205, 1240, 1684, 1928, 2105, 2410, 2480, 3368, 3856, 4210, 4820, 6736, 7471, 8420, 9640, 13051, 14942, 16840, 19280, 26102, 29884, 33680, 37355, 52204, 59768, 65255, 74710, 101461, 104408, 119536, 130510, 149420, 202922, 208816, 261020, 298840, 405844, 507305, 522040, 597680, 811688, 1014610, 1044080, 1623376, 2029220, 3145291, 4058440, 6290582, 8116880, 12581164, 15726455, 25162328, 31452910, 50324656, 62905820, 125811640, 251623280]

約数ペア:

[(1, 251623280), (2, 125811640), (4, 62905820), (5, 50324656), (8, 31452910), (10, 25162328), (16, 15726455), (20, 12581164), (31, 8116880), (40, 6290582), (62, 4058440), (80, 3145291), (124, 2029220), (155, 1623376), (241, 1044080), (248, 1014610), (310, 811688), (421, 597680), (482, 522040), (496, 507305), (620, 405844), (842, 298840), (964, 261020), (1205, 208816), (1240, 202922), (1684, 149420), (1928, 130510), (2105, 119536), (2410, 104408), (2480, 101461), (3368, 74710), (3856, 65255), (4210, 59768), (4820, 52204), (6736, 37355), (7471, 33680), (8420, 29884), (9640, 26102), (13051, 19280), (14942, 16840)]