18952780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:455

約数の個数: 96

約数和(自身を含む): 51351552

約数和(自身を除く): 32398772

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 55, 62, 70, 77, 110, 124, 140, 154, 155, 217, 220, 308, 310, 341, 385, 397, 434, 620, 682, 770, 794, 868, 1085, 1364, 1540, 1588, 1705, 1985, 2170, 2387, 2779, 3410, 3970, 4340, 4367, 4774, 5558, 6820, 7940, 8734, 9548, 11116, 11935, 12307, 13895, 17468, 21835, 23870, 24614, 27790, 30569, 43670, 47740, 49228, 55580, 61138, 61535, 86149, 87340, 122276, 123070, 135377, 152845, 172298, 246140, 270754, 305690, 344596, 430745, 541508, 611380, 676885, 861490, 947639, 1353770, 1722980, 1895278, 2707540, 3790556, 4738195, 9476390, 18952780]

約数ペア:

[(1, 18952780), (2, 9476390), (4, 4738195), (5, 3790556), (7, 2707540), (10, 1895278), (11, 1722980), (14, 1353770), (20, 947639), (22, 861490), (28, 676885), (31, 611380), (35, 541508), (44, 430745), (55, 344596), (62, 305690), (70, 270754), (77, 246140), (110, 172298), (124, 152845), (140, 135377), (154, 123070), (155, 122276), (217, 87340), (220, 86149), (308, 61535), (310, 61138), (341, 55580), (385, 49228), (397, 47740), (434, 43670), (620, 30569), (682, 27790), (770, 24614), (794, 23870), (868, 21835), (1085, 17468), (1364, 13895), (1540, 12307), (1588, 11935), (1705, 11116), (1985, 9548), (2170, 8734), (2387, 7940), (2779, 6820), (3410, 5558), (3970, 4774), (4340, 4367)]