131391640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:353

約数の個数: 128

約数和(自身を含む): 338411520

約数和(自身を除く): 207019880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 31, 34, 40, 46, 62, 68, 85, 92, 115, 124, 136, 155, 170, 184, 230, 248, 271, 310, 340, 391, 460, 527, 542, 620, 680, 713, 782, 920, 1054, 1084, 1240, 1355, 1426, 1564, 1955, 2108, 2168, 2635, 2710, 2852, 3128, 3565, 3910, 4216, 4607, 5270, 5420, 5704, 6233, 7130, 7820, 8401, 9214, 10540, 10840, 12121, 12466, 14260, 15640, 16802, 18428, 21080, 23035, 24242, 24932, 28520, 31165, 33604, 36856, 42005, 46070, 48484, 49864, 60605, 62330, 67208, 84010, 92140, 96968, 105961, 121210, 124660, 142817, 168020, 184280, 193223, 211922, 242420, 249320, 285634, 336040, 386446, 423844, 484840, 529805, 571268, 714085, 772892, 847688, 966115, 1059610, 1142536, 1428170, 1545784, 1932230, 2119220, 2856340, 3284791, 3864460, 4238440, 5712680, 6569582, 7728920, 13139164, 16423955, 26278328, 32847910, 65695820, 131391640]

約数ペア:

[(1, 131391640), (2, 65695820), (4, 32847910), (5, 26278328), (8, 16423955), (10, 13139164), (17, 7728920), (20, 6569582), (23, 5712680), (31, 4238440), (34, 3864460), (40, 3284791), (46, 2856340), (62, 2119220), (68, 1932230), (85, 1545784), (92, 1428170), (115, 1142536), (124, 1059610), (136, 966115), (155, 847688), (170, 772892), (184, 714085), (230, 571268), (248, 529805), (271, 484840), (310, 423844), (340, 386446), (391, 336040), (460, 285634), (527, 249320), (542, 242420), (620, 211922), (680, 193223), (713, 184280), (782, 168020), (920, 142817), (1054, 124660), (1084, 121210), (1240, 105961), (1355, 96968), (1426, 92140), (1564, 84010), (1955, 67208), (2108, 62330), (2168, 60605), (2635, 49864), (2710, 48484), (2852, 46070), (3128, 42005), (3565, 36856), (3910, 33604), (4216, 31165), (4607, 28520), (5270, 24932), (5420, 24242), (5704, 23035), (6233, 21080), (7130, 18428), (7820, 16802), (8401, 15640), (9214, 14260), (10540, 12466), (10840, 12121)]