19627725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 35872704

約数和(自身を除く): 16244979

約数列:

[1, 3, 5, 13, 15, 25, 39, 41, 65, 75, 123, 195, 205, 325, 491, 533, 615, 975, 1025, 1473, 1599, 2455, 2665, 3075, 6383, 7365, 7995, 12275, 13325, 19149, 20131, 31915, 36825, 39975, 60393, 95745, 100655, 159575, 261703, 301965, 478725, 503275, 785109, 1308515, 1509825, 3925545, 6542575, 19627725]

約数ペア:

[(1, 19627725), (3, 6542575), (5, 3925545), (13, 1509825), (15, 1308515), (25, 785109), (39, 503275), (41, 478725), (65, 301965), (75, 261703), (123, 159575), (195, 100655), (205, 95745), (325, 60393), (491, 39975), (533, 36825), (615, 31915), (975, 20131), (1025, 19149), (1473, 13325), (1599, 12275), (2455, 7995), (2665, 7365), (3075, 6383)]