21320380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{859}}^1$

素因数の和:958

約数の個数: 48

約数和(自身を含む): 48111840

約数和(自身を除く): 26791460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 73, 85, 146, 170, 292, 340, 365, 730, 859, 1241, 1460, 1718, 2482, 3436, 4295, 4964, 6205, 8590, 12410, 14603, 17180, 24820, 29206, 58412, 62707, 73015, 125414, 146030, 250828, 292060, 313535, 627070, 1066019, 1254140, 2132038, 4264076, 5330095, 10660190, 21320380]

約数ペア:

[(1, 21320380), (2, 10660190), (4, 5330095), (5, 4264076), (10, 2132038), (17, 1254140), (20, 1066019), (34, 627070), (68, 313535), (73, 292060), (85, 250828), (146, 146030), (170, 125414), (292, 73015), (340, 62707), (365, 58412), (730, 29206), (859, 24820), (1241, 17180), (1460, 14603), (1718, 12410), (2482, 8590), (3436, 6205), (4295, 4964)]