28463900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:315

約数の個数: 72

約数和(自身を含む): 66245760

約数和(自身を除く): 37781860

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 71, 76, 95, 100, 142, 190, 211, 284, 355, 380, 422, 475, 710, 844, 950, 1055, 1349, 1420, 1775, 1900, 2110, 2698, 3550, 4009, 4220, 5275, 5396, 6745, 7100, 8018, 10550, 13490, 14981, 16036, 20045, 21100, 26980, 29962, 33725, 40090, 59924, 67450, 74905, 80180, 100225, 134900, 149810, 200450, 284639, 299620, 374525, 400900, 569278, 749050, 1138556, 1423195, 1498100, 2846390, 5692780, 7115975, 14231950, 28463900]

約数ペア:

[(1, 28463900), (2, 14231950), (4, 7115975), (5, 5692780), (10, 2846390), (19, 1498100), (20, 1423195), (25, 1138556), (38, 749050), (50, 569278), (71, 400900), (76, 374525), (95, 299620), (100, 284639), (142, 200450), (190, 149810), (211, 134900), (284, 100225), (355, 80180), (380, 74905), (422, 67450), (475, 59924), (710, 40090), (844, 33725), (950, 29962), (1055, 26980), (1349, 21100), (1420, 20045), (1775, 16036), (1900, 14981), (2110, 13490), (2698, 10550), (3550, 8018), (4009, 7100), (4220, 6745), (5275, 5396)]