79991500

素因数分解:

$2^2\times 5^3\times {\mathrm{157}}^1\times {\mathrm{1019}}^1$

素因数の和:1195

約数の個数: 48

約数和(自身を含む): 175986720

約数和(自身を除く): 95995220

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 157, 250, 314, 500, 628, 785, 1019, 1570, 2038, 3140, 3925, 4076, 5095, 7850, 10190, 15700, 19625, 20380, 25475, 39250, 50950, 78500, 101900, 127375, 159983, 254750, 319966, 509500, 639932, 799915, 1599830, 3199660, 3999575, 7999150, 15998300, 19997875, 39995750, 79991500]

約数ペア:

[(1, 79991500), (2, 39995750), (4, 19997875), (5, 15998300), (10, 7999150), (20, 3999575), (25, 3199660), (50, 1599830), (100, 799915), (125, 639932), (157, 509500), (250, 319966), (314, 254750), (500, 159983), (628, 127375), (785, 101900), (1019, 78500), (1570, 50950), (2038, 39250), (3140, 25475), (3925, 20380), (4076, 19625), (5095, 15700), (7850, 10190)]