21688130

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1\times {\mathrm{271}}^1$

素因数の和:482

約数の個数: 32

約数和(自身を含む): 40186368

約数和(自身を除く): 18498238

約数列:

[1, 2, 5, 10, 53, 106, 151, 265, 271, 302, 530, 542, 755, 1355, 1510, 2710, 8003, 14363, 16006, 28726, 40015, 40921, 71815, 80030, 81842, 143630, 204605, 409210, 2168813, 4337626, 10844065, 21688130]

約数ペア:

[(1, 21688130), (2, 10844065), (5, 4337626), (10, 2168813), (53, 409210), (106, 204605), (151, 143630), (265, 81842), (271, 80030), (302, 71815), (530, 40921), (542, 40015), (755, 28726), (1355, 16006), (1510, 14363), (2710, 8003)]