161491400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^2$

素因数の和:176

約数の個数: 144

約数和(自身を含む): 450328320

約数和(自身を除く): 288836920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 50, 56, 61, 62, 70, 100, 122, 124, 140, 155, 175, 200, 217, 244, 248, 280, 305, 310, 350, 427, 434, 488, 610, 620, 700, 775, 854, 868, 1085, 1220, 1240, 1400, 1525, 1550, 1708, 1736, 1891, 2135, 2170, 2440, 3050, 3100, 3416, 3721, 3782, 4270, 4340, 5425, 6100, 6200, 7442, 7564, 8540, 8680, 9455, 10675, 10850, 12200, 13237, 14884, 15128, 17080, 18605, 18910, 21350, 21700, 26047, 26474, 29768, 37210, 37820, 42700, 43400, 47275, 52094, 52948, 66185, 74420, 75640, 85400, 93025, 94550, 104188, 105896, 115351, 130235, 132370, 148840, 186050, 189100, 208376, 230702, 260470, 264740, 330925, 372100, 378200, 461404, 520940, 529480, 576755, 651175, 661850, 744200, 807457, 922808, 1041880, 1153510, 1302350, 1323700, 1614914, 2307020, 2604700, 2647400, 2883775, 3229828, 4037285, 4614040, 5209400, 5767550, 6459656, 8074570, 11535100, 16149140, 20186425, 23070200, 32298280, 40372850, 80745700, 161491400]

約数ペア:

[(1, 161491400), (2, 80745700), (4, 40372850), (5, 32298280), (7, 23070200), (8, 20186425), (10, 16149140), (14, 11535100), (20, 8074570), (25, 6459656), (28, 5767550), (31, 5209400), (35, 4614040), (40, 4037285), (50, 3229828), (56, 2883775), (61, 2647400), (62, 2604700), (70, 2307020), (100, 1614914), (122, 1323700), (124, 1302350), (140, 1153510), (155, 1041880), (175, 922808), (200, 807457), (217, 744200), (244, 661850), (248, 651175), (280, 576755), (305, 529480), (310, 520940), (350, 461404), (427, 378200), (434, 372100), (488, 330925), (610, 264740), (620, 260470), (700, 230702), (775, 208376), (854, 189100), (868, 186050), (1085, 148840), (1220, 132370), (1240, 130235), (1400, 115351), (1525, 105896), (1550, 104188), (1708, 94550), (1736, 93025), (1891, 85400), (2135, 75640), (2170, 74420), (2440, 66185), (3050, 52948), (3100, 52094), (3416, 47275), (3721, 43400), (3782, 42700), (4270, 37820), (4340, 37210), (5425, 29768), (6100, 26474), (6200, 26047), (7442, 21700), (7564, 21350), (8540, 18910), (8680, 18605), (9455, 17080), (10675, 15128), (10850, 14884), (12200, 13237)]