20217961790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{7907}}^1$

素因数の和:8046

約数の個数: 96

約数和(自身を含む): 42199302240

約数和(自身を除く): 21981340450

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 89, 130, 169, 170, 178, 221, 338, 442, 445, 845, 890, 1105, 1157, 1513, 1690, 2210, 2314, 2873, 3026, 5746, 5785, 7565, 7907, 11570, 14365, 15041, 15130, 15814, 19669, 28730, 30082, 39338, 39535, 75205, 79070, 98345, 102791, 134419, 150410, 196690, 205582, 255697, 268838, 511394, 513955, 672095, 703723, 1027910, 1278485, 1336283, 1344190, 1407446, 1747447, 2556970, 2672566, 3494894, 3518615, 6681415, 7037230, 8737235, 9148399, 11963291, 13362830, 17474470, 18296798, 22716811, 23926582, 45433622, 45741995, 59816455, 91483990, 113584055, 118929187, 119632910, 155522783, 227168110, 237858374, 311045566, 594645935, 777613915, 1189291870, 1555227830, 2021796179, 4043592358, 10108980895, 20217961790]

約数ペア:

[(1, 20217961790), (2, 10108980895), (5, 4043592358), (10, 2021796179), (13, 1555227830), (17, 1189291870), (26, 777613915), (34, 594645935), (65, 311045566), (85, 237858374), (89, 227168110), (130, 155522783), (169, 119632910), (170, 118929187), (178, 113584055), (221, 91483990), (338, 59816455), (442, 45741995), (445, 45433622), (845, 23926582), (890, 22716811), (1105, 18296798), (1157, 17474470), (1513, 13362830), (1690, 11963291), (2210, 9148399), (2314, 8737235), (2873, 7037230), (3026, 6681415), (5746, 3518615), (5785, 3494894), (7565, 2672566), (7907, 2556970), (11570, 1747447), (14365, 1407446), (15041, 1344190), (15130, 1336283), (15814, 1278485), (19669, 1027910), (28730, 703723), (30082, 672095), (39338, 513955), (39535, 511394), (75205, 268838), (79070, 255697), (98345, 205582), (102791, 196690), (134419, 150410)]