313620520

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{1627}}^1$

素因数の和:1778

約数の個数: 64

約数和(自身を含む): 726739200

約数和(自身を除く): 413118680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 79, 122, 158, 244, 305, 316, 395, 488, 610, 632, 790, 1220, 1580, 1627, 2440, 3160, 3254, 4819, 6508, 8135, 9638, 13016, 16270, 19276, 24095, 32540, 38552, 48190, 65080, 96380, 99247, 128533, 192760, 198494, 257066, 396988, 496235, 514132, 642665, 793976, 992470, 1028264, 1285330, 1984940, 2570660, 3969880, 5141320, 7840513, 15681026, 31362052, 39202565, 62724104, 78405130, 156810260, 313620520]

約数ペア:

[(1, 313620520), (2, 156810260), (4, 78405130), (5, 62724104), (8, 39202565), (10, 31362052), (20, 15681026), (40, 7840513), (61, 5141320), (79, 3969880), (122, 2570660), (158, 1984940), (244, 1285330), (305, 1028264), (316, 992470), (395, 793976), (488, 642665), (610, 514132), (632, 496235), (790, 396988), (1220, 257066), (1580, 198494), (1627, 192760), (2440, 128533), (3160, 99247), (3254, 96380), (4819, 65080), (6508, 48190), (8135, 38552), (9638, 32540), (13016, 24095), (16270, 19276)]