84770020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 192024000

約数和(自身を除く): 107253980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 199, 236, 295, 361, 380, 398, 590, 722, 796, 995, 1121, 1180, 1444, 1805, 1990, 2242, 3610, 3781, 3980, 4484, 5605, 7220, 7562, 11210, 11741, 15124, 18905, 21299, 22420, 23482, 37810, 42598, 46964, 58705, 71839, 75620, 85196, 106495, 117410, 143678, 212990, 223079, 234820, 287356, 359195, 425980, 446158, 718390, 892316, 1115395, 1436780, 2230790, 4238501, 4461580, 8477002, 16954004, 21192505, 42385010, 84770020]

約数ペア:

[(1, 84770020), (2, 42385010), (4, 21192505), (5, 16954004), (10, 8477002), (19, 4461580), (20, 4238501), (38, 2230790), (59, 1436780), (76, 1115395), (95, 892316), (118, 718390), (190, 446158), (199, 425980), (236, 359195), (295, 287356), (361, 234820), (380, 223079), (398, 212990), (590, 143678), (722, 117410), (796, 106495), (995, 85196), (1121, 75620), (1180, 71839), (1444, 58705), (1805, 46964), (1990, 42598), (2242, 37810), (3610, 23482), (3781, 22420), (3980, 21299), (4484, 18905), (5605, 15124), (7220, 11741), (7562, 11210)]