20350980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{223}}^1$

素因数の和:267

約数の個数: 144

約数和(自身を含む): 68866560

約数和(自身を除く): 48515580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 90, 108, 117, 130, 135, 156, 169, 180, 195, 223, 234, 260, 270, 338, 351, 390, 446, 468, 507, 540, 585, 669, 676, 702, 780, 845, 892, 1014, 1115, 1170, 1338, 1404, 1521, 1690, 1755, 2007, 2028, 2230, 2340, 2535, 2676, 2899, 3042, 3345, 3380, 3510, 4014, 4460, 4563, 5070, 5798, 6021, 6084, 6690, 7020, 7605, 8028, 8697, 9126, 10035, 10140, 11596, 12042, 13380, 14495, 15210, 17394, 18252, 20070, 22815, 24084, 26091, 28990, 30105, 30420, 34788, 37687, 40140, 43485, 45630, 52182, 57980, 60210, 75374, 78273, 86970, 91260, 104364, 113061, 120420, 130455, 150748, 156546, 173940, 188435, 226122, 260910, 313092, 339183, 376870, 391365, 452244, 521820, 565305, 678366, 753740, 782730, 1017549, 1130610, 1356732, 1565460, 1695915, 2035098, 2261220, 3391830, 4070196, 5087745, 6783660, 10175490, 20350980]

約数ペア:

[(1, 20350980), (2, 10175490), (3, 6783660), (4, 5087745), (5, 4070196), (6, 3391830), (9, 2261220), (10, 2035098), (12, 1695915), (13, 1565460), (15, 1356732), (18, 1130610), (20, 1017549), (26, 782730), (27, 753740), (30, 678366), (36, 565305), (39, 521820), (45, 452244), (52, 391365), (54, 376870), (60, 339183), (65, 313092), (78, 260910), (90, 226122), (108, 188435), (117, 173940), (130, 156546), (135, 150748), (156, 130455), (169, 120420), (180, 113061), (195, 104364), (223, 91260), (234, 86970), (260, 78273), (270, 75374), (338, 60210), (351, 57980), (390, 52182), (446, 45630), (468, 43485), (507, 40140), (540, 37687), (585, 34788), (669, 30420), (676, 30105), (702, 28990), (780, 26091), (845, 24084), (892, 22815), (1014, 20070), (1115, 18252), (1170, 17394), (1338, 15210), (1404, 14495), (1521, 13380), (1690, 12042), (1755, 11596), (2007, 10140), (2028, 10035), (2230, 9126), (2340, 8697), (2535, 8028), (2676, 7605), (2899, 7020), (3042, 6690), (3345, 6084), (3380, 6021), (3510, 5798), (4014, 5070), (4460, 4563)]