258347440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:231

約数の個数: 160

約数和(自身を含む): 680581440

約数和(自身を除く): 422234000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 53, 65, 80, 86, 104, 106, 109, 130, 172, 208, 212, 215, 218, 260, 265, 344, 424, 430, 436, 520, 530, 545, 559, 688, 689, 848, 860, 872, 1040, 1060, 1090, 1118, 1378, 1417, 1720, 1744, 2120, 2180, 2236, 2279, 2756, 2795, 2834, 3440, 3445, 4240, 4360, 4472, 4558, 4687, 5512, 5590, 5668, 5777, 6890, 7085, 8720, 8944, 9116, 9374, 11024, 11180, 11336, 11395, 11554, 13780, 14170, 18232, 18748, 22360, 22672, 22790, 23108, 23435, 27560, 28340, 28885, 29627, 36464, 37496, 44720, 45580, 46216, 46870, 55120, 56680, 57770, 59254, 60931, 74992, 75101, 91160, 92432, 93740, 113360, 115540, 118508, 121862, 148135, 150202, 182320, 187480, 231080, 237016, 243724, 248411, 296270, 300404, 304655, 374960, 375505, 462160, 474032, 487448, 496822, 592540, 600808, 609310, 751010, 974896, 993644, 1185080, 1201616, 1218620, 1242055, 1502020, 1987288, 2370160, 2437240, 2484110, 3004040, 3229343, 3974576, 4874480, 4968220, 6008080, 6458686, 9936440, 12917372, 16146715, 19872880, 25834744, 32293430, 51669488, 64586860, 129173720, 258347440]

約数ペア:

[(1, 258347440), (2, 129173720), (4, 64586860), (5, 51669488), (8, 32293430), (10, 25834744), (13, 19872880), (16, 16146715), (20, 12917372), (26, 9936440), (40, 6458686), (43, 6008080), (52, 4968220), (53, 4874480), (65, 3974576), (80, 3229343), (86, 3004040), (104, 2484110), (106, 2437240), (109, 2370160), (130, 1987288), (172, 1502020), (208, 1242055), (212, 1218620), (215, 1201616), (218, 1185080), (260, 993644), (265, 974896), (344, 751010), (424, 609310), (430, 600808), (436, 592540), (520, 496822), (530, 487448), (545, 474032), (559, 462160), (688, 375505), (689, 374960), (848, 304655), (860, 300404), (872, 296270), (1040, 248411), (1060, 243724), (1090, 237016), (1118, 231080), (1378, 187480), (1417, 182320), (1720, 150202), (1744, 148135), (2120, 121862), (2180, 118508), (2236, 115540), (2279, 113360), (2756, 93740), (2795, 92432), (2834, 91160), (3440, 75101), (3445, 74992), (4240, 60931), (4360, 59254), (4472, 57770), (4558, 56680), (4687, 55120), (5512, 46870), (5590, 46216), (5668, 45580), (5777, 44720), (6890, 37496), (7085, 36464), (8720, 29627), (8944, 28885), (9116, 28340), (9374, 27560), (11024, 23435), (11180, 23108), (11336, 22790), (11395, 22672), (11554, 22360), (13780, 18748), (14170, 18232)]