21577360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{727}}^1$

素因数の和:800

約数の個数: 80

約数和(自身を含む): 58496256

約数和(自身を除く): 36918896

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 53, 56, 70, 80, 106, 112, 140, 212, 265, 280, 371, 424, 530, 560, 727, 742, 848, 1060, 1454, 1484, 1855, 2120, 2908, 2968, 3635, 3710, 4240, 5089, 5816, 5936, 7270, 7420, 10178, 11632, 14540, 14840, 20356, 25445, 29080, 29680, 38531, 40712, 50890, 58160, 77062, 81424, 101780, 154124, 192655, 203560, 269717, 308248, 385310, 407120, 539434, 616496, 770620, 1078868, 1348585, 1541240, 2157736, 2697170, 3082480, 4315472, 5394340, 10788680, 21577360]

約数ペア:

[(1, 21577360), (2, 10788680), (4, 5394340), (5, 4315472), (7, 3082480), (8, 2697170), (10, 2157736), (14, 1541240), (16, 1348585), (20, 1078868), (28, 770620), (35, 616496), (40, 539434), (53, 407120), (56, 385310), (70, 308248), (80, 269717), (106, 203560), (112, 192655), (140, 154124), (212, 101780), (265, 81424), (280, 77062), (371, 58160), (424, 50890), (530, 40712), (560, 38531), (727, 29680), (742, 29080), (848, 25445), (1060, 20356), (1454, 14840), (1484, 14540), (1855, 11632), (2120, 10178), (2908, 7420), (2968, 7270), (3635, 5936), (3710, 5816), (4240, 5089)]