18690980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{229}}^1$

素因数の和:309

約数の個数: 96

約数和(自身を含む): 50077440

約数和(自身を除く): 31386460

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 53, 55, 70, 77, 106, 110, 140, 154, 212, 220, 229, 265, 308, 371, 385, 458, 530, 583, 742, 770, 916, 1060, 1145, 1166, 1484, 1540, 1603, 1855, 2290, 2332, 2519, 2915, 3206, 3710, 4081, 4580, 5038, 5830, 6412, 7420, 8015, 8162, 10076, 11660, 12137, 12595, 16030, 16324, 17633, 20405, 24274, 25190, 32060, 35266, 40810, 48548, 50380, 60685, 70532, 81620, 84959, 88165, 121370, 133507, 169918, 176330, 242740, 267014, 339836, 352660, 424795, 534028, 667535, 849590, 934549, 1335070, 1699180, 1869098, 2670140, 3738196, 4672745, 9345490, 18690980]

約数ペア:

[(1, 18690980), (2, 9345490), (4, 4672745), (5, 3738196), (7, 2670140), (10, 1869098), (11, 1699180), (14, 1335070), (20, 934549), (22, 849590), (28, 667535), (35, 534028), (44, 424795), (53, 352660), (55, 339836), (70, 267014), (77, 242740), (106, 176330), (110, 169918), (140, 133507), (154, 121370), (212, 88165), (220, 84959), (229, 81620), (265, 70532), (308, 60685), (371, 50380), (385, 48548), (458, 40810), (530, 35266), (583, 32060), (742, 25190), (770, 24274), (916, 20405), (1060, 17633), (1145, 16324), (1166, 16030), (1484, 12595), (1540, 12137), (1603, 11660), (1855, 10076), (2290, 8162), (2332, 8015), (2519, 7420), (2915, 6412), (3206, 5830), (3710, 5038), (4081, 4580)]