861362800

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{643}}^1$

素因数の和:875

約数の個数: 120

約数和(自身を含む): 2205702576

約数和(自身を除く): 1344339776

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 197, 200, 272, 340, 394, 400, 425, 643, 680, 788, 850, 985, 1286, 1360, 1576, 1700, 1970, 2572, 3152, 3215, 3349, 3400, 3940, 4925, 5144, 6430, 6698, 6800, 7880, 9850, 10288, 10931, 12860, 13396, 15760, 16075, 16745, 19700, 21862, 25720, 26792, 32150, 33490, 39400, 43724, 51440, 53584, 54655, 64300, 66980, 78800, 83725, 87448, 109310, 126671, 128600, 133960, 167450, 174896, 218620, 253342, 257200, 267920, 273275, 334900, 437240, 506684, 546550, 633355, 669800, 874480, 1013368, 1093100, 1266710, 1339600, 2026736, 2153407, 2186200, 2533420, 3166775, 4306814, 4372400, 5066840, 6333550, 8613628, 10133680, 10767035, 12667100, 17227256, 21534070, 25334200, 34454512, 43068140, 50668400, 53835175, 86136280, 107670350, 172272560, 215340700, 430681400, 861362800]

約数ペア:

[(1, 861362800), (2, 430681400), (4, 215340700), (5, 172272560), (8, 107670350), (10, 86136280), (16, 53835175), (17, 50668400), (20, 43068140), (25, 34454512), (34, 25334200), (40, 21534070), (50, 17227256), (68, 12667100), (80, 10767035), (85, 10133680), (100, 8613628), (136, 6333550), (170, 5066840), (197, 4372400), (200, 4306814), (272, 3166775), (340, 2533420), (394, 2186200), (400, 2153407), (425, 2026736), (643, 1339600), (680, 1266710), (788, 1093100), (850, 1013368), (985, 874480), (1286, 669800), (1360, 633355), (1576, 546550), (1700, 506684), (1970, 437240), (2572, 334900), (3152, 273275), (3215, 267920), (3349, 257200), (3400, 253342), (3940, 218620), (4925, 174896), (5144, 167450), (6430, 133960), (6698, 128600), (6800, 126671), (7880, 109310), (9850, 87448), (10288, 83725), (10931, 78800), (12860, 66980), (13396, 64300), (15760, 54655), (16075, 53584), (16745, 51440), (19700, 43724), (21862, 39400), (25720, 33490), (26792, 32150)]