19508125

素因数分解:

$5^4\times 7^4\times {\mathrm{13}}^1$

素因数の和:61

約数の個数: 50

約数和(自身を含む): 30626134

約数和(自身を除く): 11118009

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 125, 175, 245, 325, 343, 455, 625, 637, 875, 1225, 1625, 1715, 2275, 2401, 3185, 4375, 4459, 6125, 8125, 8575, 11375, 12005, 15925, 22295, 30625, 31213, 42875, 56875, 60025, 79625, 111475, 156065, 214375, 300125, 398125, 557375, 780325, 1500625, 2786875, 3901625, 19508125]

約数ペア:

[(1, 19508125), (5, 3901625), (7, 2786875), (13, 1500625), (25, 780325), (35, 557375), (49, 398125), (65, 300125), (91, 214375), (125, 156065), (175, 111475), (245, 79625), (325, 60025), (343, 56875), (455, 42875), (625, 31213), (637, 30625), (875, 22295), (1225, 15925), (1625, 12005), (1715, 11375), (2275, 8575), (2401, 8125), (3185, 6125), (4375, 4459)]