28956380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{421}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 64515360

約数和(自身を除く): 35558980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 181, 190, 362, 380, 421, 724, 842, 905, 1684, 1810, 2105, 3439, 3620, 4210, 6878, 7999, 8420, 13756, 15998, 17195, 31996, 34390, 39995, 68780, 76201, 79990, 152402, 159980, 304804, 381005, 762010, 1447819, 1524020, 2895638, 5791276, 7239095, 14478190, 28956380]

約数ペア:

[(1, 28956380), (2, 14478190), (4, 7239095), (5, 5791276), (10, 2895638), (19, 1524020), (20, 1447819), (38, 762010), (76, 381005), (95, 304804), (181, 159980), (190, 152402), (362, 79990), (380, 76201), (421, 68780), (724, 39995), (842, 34390), (905, 31996), (1684, 17195), (1810, 15998), (2105, 13756), (3439, 8420), (3620, 7999), (4210, 6878)]