251512040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:363

約数の個数: 128

約数和(自身を含む): 640120320

約数和(自身を除く): 388608280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 47, 52, 65, 82, 94, 104, 130, 164, 188, 205, 235, 251, 260, 328, 376, 410, 470, 502, 520, 533, 611, 820, 940, 1004, 1066, 1222, 1255, 1640, 1880, 1927, 2008, 2132, 2444, 2510, 2665, 3055, 3263, 3854, 4264, 4888, 5020, 5330, 6110, 6526, 7708, 9635, 10040, 10291, 10660, 11797, 12220, 13052, 15416, 16315, 19270, 20582, 21320, 23594, 24440, 25051, 26104, 32630, 38540, 41164, 47188, 50102, 51455, 58985, 65260, 77080, 82328, 94376, 100204, 102910, 117970, 125255, 130520, 133783, 153361, 200408, 205820, 235940, 250510, 267566, 306722, 411640, 471880, 483677, 501020, 535132, 613444, 668915, 766805, 967354, 1002040, 1070264, 1226888, 1337830, 1533610, 1934708, 2418385, 2675660, 3067220, 3869416, 4836770, 5351320, 6134440, 6287801, 9673540, 12575602, 19347080, 25151204, 31439005, 50302408, 62878010, 125756020, 251512040]

約数ペア:

[(1, 251512040), (2, 125756020), (4, 62878010), (5, 50302408), (8, 31439005), (10, 25151204), (13, 19347080), (20, 12575602), (26, 9673540), (40, 6287801), (41, 6134440), (47, 5351320), (52, 4836770), (65, 3869416), (82, 3067220), (94, 2675660), (104, 2418385), (130, 1934708), (164, 1533610), (188, 1337830), (205, 1226888), (235, 1070264), (251, 1002040), (260, 967354), (328, 766805), (376, 668915), (410, 613444), (470, 535132), (502, 501020), (520, 483677), (533, 471880), (611, 411640), (820, 306722), (940, 267566), (1004, 250510), (1066, 235940), (1222, 205820), (1255, 200408), (1640, 153361), (1880, 133783), (1927, 130520), (2008, 125255), (2132, 117970), (2444, 102910), (2510, 100204), (2665, 94376), (3055, 82328), (3263, 77080), (3854, 65260), (4264, 58985), (4888, 51455), (5020, 50102), (5330, 47188), (6110, 41164), (6526, 38540), (7708, 32630), (9635, 26104), (10040, 25051), (10291, 24440), (10660, 23594), (11797, 21320), (12220, 20582), (13052, 19270), (15416, 16315)]