71489775

素因数分解:

$3^1\times 5^2\times 7^4\times {\mathrm{397}}^1$

素因数の和:438

約数の個数: 60

約数和(自身を含む): 138234952

約数和(自身を除く): 66745177

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 343, 397, 525, 735, 1029, 1191, 1225, 1715, 1985, 2401, 2779, 3675, 5145, 5955, 7203, 8337, 8575, 9925, 12005, 13895, 19453, 25725, 29775, 36015, 41685, 58359, 60025, 69475, 97265, 136171, 180075, 208425, 291795, 408513, 486325, 680855, 953197, 1458975, 2042565, 2859591, 3404275, 4765985, 10212825, 14297955, 23829925, 71489775]

約数ペア:

[(1, 71489775), (3, 23829925), (5, 14297955), (7, 10212825), (15, 4765985), (21, 3404275), (25, 2859591), (35, 2042565), (49, 1458975), (75, 953197), (105, 680855), (147, 486325), (175, 408513), (245, 291795), (343, 208425), (397, 180075), (525, 136171), (735, 97265), (1029, 69475), (1191, 60025), (1225, 58359), (1715, 41685), (1985, 36015), (2401, 29775), (2779, 25725), (3675, 19453), (5145, 13895), (5955, 12005), (7203, 9925), (8337, 8575)]