25499980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3739}}^1$

素因数の和:3790

約数の個数: 48

約数和(自身を含む): 60318720

約数和(自身を除く): 34818740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 3739, 6820, 7478, 14956, 18695, 37390, 41129, 74780, 82258, 115909, 164516, 205645, 231818, 411290, 463636, 579545, 822580, 1159090, 1274999, 2318180, 2549998, 5099996, 6374995, 12749990, 25499980]

約数ペア:

[(1, 25499980), (2, 12749990), (4, 6374995), (5, 5099996), (10, 2549998), (11, 2318180), (20, 1274999), (22, 1159090), (31, 822580), (44, 579545), (55, 463636), (62, 411290), (110, 231818), (124, 205645), (155, 164516), (220, 115909), (310, 82258), (341, 74780), (620, 41129), (682, 37390), (1364, 18695), (1705, 14956), (3410, 7478), (3739, 6820)]