66816920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{87917}}^1$

素因数の和:87947

約数の個数: 32

約数和(自身を含む): 158252400

約数和(自身を除く): 91435480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 87917, 175834, 351668, 439585, 703336, 879170, 1670423, 1758340, 3340846, 3516680, 6681692, 8352115, 13363384, 16704230, 33408460, 66816920]

約数ペア:

[(1, 66816920), (2, 33408460), (4, 16704230), (5, 13363384), (8, 8352115), (10, 6681692), (19, 3516680), (20, 3340846), (38, 1758340), (40, 1670423), (76, 879170), (95, 703336), (152, 439585), (190, 351668), (380, 175834), (760, 87917)]