287201720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:793

約数の個数: 128

約数和(自身を含む): 751464000

約数和(自身を除く): 464262280

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 41, 52, 65, 76, 82, 95, 104, 130, 152, 164, 190, 205, 247, 260, 328, 380, 410, 494, 520, 533, 709, 760, 779, 820, 988, 1066, 1235, 1418, 1558, 1640, 1976, 2132, 2470, 2665, 2836, 3116, 3545, 3895, 4264, 4940, 5330, 5672, 6232, 7090, 7790, 9217, 9880, 10127, 10660, 13471, 14180, 15580, 18434, 20254, 21320, 26942, 28360, 29069, 31160, 36868, 40508, 46085, 50635, 53884, 58138, 67355, 73736, 81016, 92170, 101270, 107768, 116276, 134710, 145345, 175123, 184340, 202540, 232552, 269420, 290690, 350246, 368680, 377897, 405080, 538840, 552311, 581380, 700492, 755794, 875615, 1104622, 1162760, 1400984, 1511588, 1751230, 1889485, 2209244, 2761555, 3023176, 3502460, 3778970, 4418488, 5523110, 7004920, 7180043, 7557940, 11046220, 14360086, 15115880, 22092440, 28720172, 35900215, 57440344, 71800430, 143600860, 287201720]

約数ペア:

[(1, 287201720), (2, 143600860), (4, 71800430), (5, 57440344), (8, 35900215), (10, 28720172), (13, 22092440), (19, 15115880), (20, 14360086), (26, 11046220), (38, 7557940), (40, 7180043), (41, 7004920), (52, 5523110), (65, 4418488), (76, 3778970), (82, 3502460), (95, 3023176), (104, 2761555), (130, 2209244), (152, 1889485), (164, 1751230), (190, 1511588), (205, 1400984), (247, 1162760), (260, 1104622), (328, 875615), (380, 755794), (410, 700492), (494, 581380), (520, 552311), (533, 538840), (709, 405080), (760, 377897), (779, 368680), (820, 350246), (988, 290690), (1066, 269420), (1235, 232552), (1418, 202540), (1558, 184340), (1640, 175123), (1976, 145345), (2132, 134710), (2470, 116276), (2665, 107768), (2836, 101270), (3116, 92170), (3545, 81016), (3895, 73736), (4264, 67355), (4940, 58138), (5330, 53884), (5672, 50635), (6232, 46085), (7090, 40508), (7790, 36868), (9217, 31160), (9880, 29069), (10127, 28360), (10660, 26942), (13471, 21320), (14180, 20254), (15580, 18434)]