21052130

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 44229888

約数和(自身を除く): 23177758

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 53, 55, 106, 110, 115, 157, 230, 253, 265, 314, 506, 530, 583, 785, 1166, 1219, 1265, 1570, 1727, 2438, 2530, 2915, 3454, 3611, 5830, 6095, 7222, 8321, 8635, 12190, 13409, 16642, 17270, 18055, 26818, 36110, 39721, 41605, 67045, 79442, 83210, 91531, 134090, 183062, 191383, 198605, 382766, 397210, 457655, 915310, 956915, 1913830, 2105213, 4210426, 10526065, 21052130]

約数ペア:

[(1, 21052130), (2, 10526065), (5, 4210426), (10, 2105213), (11, 1913830), (22, 956915), (23, 915310), (46, 457655), (53, 397210), (55, 382766), (106, 198605), (110, 191383), (115, 183062), (157, 134090), (230, 91531), (253, 83210), (265, 79442), (314, 67045), (506, 41605), (530, 39721), (583, 36110), (785, 26818), (1166, 18055), (1219, 17270), (1265, 16642), (1570, 13409), (1727, 12190), (2438, 8635), (2530, 8321), (2915, 7222), (3454, 6095), (3611, 5830)]