19516980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1499}}^1$

素因数の和:1549

約数の個数: 96

約数和(自身を含む): 64512000

約数和(自身を除く): 44995020

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, 1499, 1860, 2170, 2604, 2998, 3255, 4340, 4497, 5996, 6510, 7495, 8994, 10493, 13020, 14990, 17988, 20986, 22485, 29980, 31479, 41972, 44970, 46469, 52465, 62958, 89940, 92938, 104930, 125916, 139407, 157395, 185876, 209860, 232345, 278814, 314790, 325283, 464690, 557628, 629580, 650566, 697035, 929380, 975849, 1301132, 1394070, 1626415, 1951698, 2788140, 3252830, 3903396, 4879245, 6505660, 9758490, 19516980]

約数ペア:

[(1, 19516980), (2, 9758490), (3, 6505660), (4, 4879245), (5, 3903396), (6, 3252830), (7, 2788140), (10, 1951698), (12, 1626415), (14, 1394070), (15, 1301132), (20, 975849), (21, 929380), (28, 697035), (30, 650566), (31, 629580), (35, 557628), (42, 464690), (60, 325283), (62, 314790), (70, 278814), (84, 232345), (93, 209860), (105, 185876), (124, 157395), (140, 139407), (155, 125916), (186, 104930), (210, 92938), (217, 89940), (310, 62958), (372, 52465), (420, 46469), (434, 44970), (465, 41972), (620, 31479), (651, 29980), (868, 22485), (930, 20986), (1085, 17988), (1302, 14990), (1499, 13020), (1860, 10493), (2170, 8994), (2604, 7495), (2998, 6510), (3255, 5996), (4340, 4497)]