17720450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:164

約数の個数: 72

約数和(自身を含む): 37849140

約数和(自身を除く): 20128690

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 101, 110, 121, 145, 202, 242, 275, 290, 319, 505, 550, 605, 638, 725, 1010, 1111, 1210, 1450, 1595, 2222, 2525, 2929, 3025, 3190, 3509, 5050, 5555, 5858, 6050, 7018, 7975, 11110, 12221, 14645, 15950, 17545, 24442, 27775, 29290, 32219, 35090, 55550, 61105, 64438, 73225, 87725, 122210, 146450, 161095, 175450, 305525, 322190, 354409, 611050, 708818, 805475, 1610950, 1772045, 3544090, 8860225, 17720450]

約数ペア:

[(1, 17720450), (2, 8860225), (5, 3544090), (10, 1772045), (11, 1610950), (22, 805475), (25, 708818), (29, 611050), (50, 354409), (55, 322190), (58, 305525), (101, 175450), (110, 161095), (121, 146450), (145, 122210), (202, 87725), (242, 73225), (275, 64438), (290, 61105), (319, 55550), (505, 35090), (550, 32219), (605, 29290), (638, 27775), (725, 24442), (1010, 17545), (1111, 15950), (1210, 14645), (1450, 12221), (1595, 11110), (2222, 7975), (2525, 7018), (2929, 6050), (3025, 5858), (3190, 5555), (3509, 5050)]