21270147380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{702913}}^1$

素因数の和:703028

約数の個数: 48

約数和(自身を含む): 47826268560

約数和(自身を除く): 26556121180

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 170, 178, 340, 356, 445, 890, 1513, 1780, 3026, 6052, 7565, 15130, 30260, 702913, 1405826, 2811652, 3514565, 7029130, 11949521, 14058260, 23899042, 47798084, 59747605, 62559257, 119495210, 125118514, 238990420, 250237028, 312796285, 625592570, 1063507369, 1251185140, 2127014738, 4254029476, 5317536845, 10635073690, 21270147380]

約数ペア:

[(1, 21270147380), (2, 10635073690), (4, 5317536845), (5, 4254029476), (10, 2127014738), (17, 1251185140), (20, 1063507369), (34, 625592570), (68, 312796285), (85, 250237028), (89, 238990420), (170, 125118514), (178, 119495210), (340, 62559257), (356, 59747605), (445, 47798084), (890, 23899042), (1513, 14058260), (1780, 11949521), (3026, 7029130), (6052, 3514565), (7565, 2811652), (15130, 1405826), (30260, 702913)]