9953980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 21873600

約数和(自身を除く): 11919620

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 199, 205, 244, 305, 398, 410, 610, 796, 820, 995, 1220, 1990, 2501, 3980, 5002, 8159, 10004, 12139, 12505, 16318, 24278, 25010, 32636, 40795, 48556, 50020, 60695, 81590, 121390, 163180, 242780, 497699, 995398, 1990796, 2488495, 4976990, 9953980]

約数ペア:

[(1, 9953980), (2, 4976990), (4, 2488495), (5, 1990796), (10, 995398), (20, 497699), (41, 242780), (61, 163180), (82, 121390), (122, 81590), (164, 60695), (199, 50020), (205, 48556), (244, 40795), (305, 32636), (398, 25010), (410, 24278), (610, 16318), (796, 12505), (820, 12139), (995, 10004), (1220, 8159), (1990, 5002), (2501, 3980)]