315791320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:437

約数の個数: 128

約数和(自身を含む): 819201600

約数和(自身を除く): 503410280

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 139, 170, 221, 257, 260, 278, 340, 442, 514, 520, 556, 680, 695, 884, 1028, 1105, 1112, 1285, 1390, 1768, 1807, 2056, 2210, 2363, 2570, 2780, 3341, 3614, 4369, 4420, 4726, 5140, 5560, 6682, 7228, 8738, 8840, 9035, 9452, 10280, 11815, 13364, 14456, 16705, 17476, 18070, 18904, 21845, 23630, 26728, 30719, 33410, 34952, 35723, 36140, 43690, 47260, 56797, 61438, 66820, 71446, 72280, 87380, 94520, 113594, 122876, 133640, 142892, 153595, 174760, 178615, 227188, 245752, 283985, 285784, 307190, 357230, 454376, 464399, 567970, 607291, 614380, 714460, 928798, 1135940, 1214582, 1228760, 1428920, 1857596, 2271880, 2321995, 2429164, 3036455, 3715192, 4643990, 4858328, 6072910, 7894783, 9287980, 12145820, 15789566, 18575960, 24291640, 31579132, 39473915, 63158264, 78947830, 157895660, 315791320]

約数ペア:

[(1, 315791320), (2, 157895660), (4, 78947830), (5, 63158264), (8, 39473915), (10, 31579132), (13, 24291640), (17, 18575960), (20, 15789566), (26, 12145820), (34, 9287980), (40, 7894783), (52, 6072910), (65, 4858328), (68, 4643990), (85, 3715192), (104, 3036455), (130, 2429164), (136, 2321995), (139, 2271880), (170, 1857596), (221, 1428920), (257, 1228760), (260, 1214582), (278, 1135940), (340, 928798), (442, 714460), (514, 614380), (520, 607291), (556, 567970), (680, 464399), (695, 454376), (884, 357230), (1028, 307190), (1105, 285784), (1112, 283985), (1285, 245752), (1390, 227188), (1768, 178615), (1807, 174760), (2056, 153595), (2210, 142892), (2363, 133640), (2570, 122876), (2780, 113594), (3341, 94520), (3614, 87380), (4369, 72280), (4420, 71446), (4726, 66820), (5140, 61438), (5560, 56797), (6682, 47260), (7228, 43690), (8738, 36140), (8840, 35723), (9035, 34952), (9452, 33410), (10280, 30719), (11815, 26728), (13364, 23630), (14456, 21845), (16705, 18904), (17476, 18070)]