31781820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2441}}^1$

素因数の和:2491

約数の個数: 96

約数和(自身を含む): 105025536

約数和(自身を除く): 73243716

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 62, 70, 84, 93, 105, 124, 140, 155, 186, 210, 217, 310, 372, 420, 434, 465, 620, 651, 868, 930, 1085, 1302, 1860, 2170, 2441, 2604, 3255, 4340, 4882, 6510, 7323, 9764, 12205, 13020, 14646, 17087, 24410, 29292, 34174, 36615, 48820, 51261, 68348, 73230, 75671, 85435, 102522, 146460, 151342, 170870, 205044, 227013, 256305, 302684, 341740, 378355, 454026, 512610, 529697, 756710, 908052, 1025220, 1059394, 1135065, 1513420, 1589091, 2118788, 2270130, 2648485, 3178182, 4540260, 5296970, 6356364, 7945455, 10593940, 15890910, 31781820]

約数ペア:

[(1, 31781820), (2, 15890910), (3, 10593940), (4, 7945455), (5, 6356364), (6, 5296970), (7, 4540260), (10, 3178182), (12, 2648485), (14, 2270130), (15, 2118788), (20, 1589091), (21, 1513420), (28, 1135065), (30, 1059394), (31, 1025220), (35, 908052), (42, 756710), (60, 529697), (62, 512610), (70, 454026), (84, 378355), (93, 341740), (105, 302684), (124, 256305), (140, 227013), (155, 205044), (186, 170870), (210, 151342), (217, 146460), (310, 102522), (372, 85435), (420, 75671), (434, 73230), (465, 68348), (620, 51261), (651, 48820), (868, 36615), (930, 34174), (1085, 29292), (1302, 24410), (1860, 17087), (2170, 14646), (2441, 13020), (2604, 12205), (3255, 9764), (4340, 7323), (4882, 6510)]