917289505

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 1283184000

約数和(自身を除く): 365894495

約数列:

[1, 5, 11, 19, 55, 95, 121, 199, 209, 401, 605, 995, 1045, 2005, 2189, 2299, 3781, 4411, 7619, 10945, 11495, 18905, 22055, 24079, 38095, 41591, 48521, 79799, 83809, 120395, 207955, 242605, 398995, 419045, 457501, 877789, 921899, 1516181, 2287505, 4388945, 4609495, 7580905, 9655679, 16677991, 48278395, 83389955, 183457901, 917289505]

約数ペア:

[(1, 917289505), (5, 183457901), (11, 83389955), (19, 48278395), (55, 16677991), (95, 9655679), (121, 7580905), (199, 4609495), (209, 4388945), (401, 2287505), (605, 1516181), (995, 921899), (1045, 877789), (2005, 457501), (2189, 419045), (2299, 398995), (3781, 242605), (4411, 207955), (7619, 120395), (10945, 83809), (11495, 79799), (18905, 48521), (22055, 41591), (24079, 38095)]