81543920

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{13963}}^1$

素因数の和:14049

約数の個数: 40

約数和(自身を含む): 192200496

約数和(自身を除く): 110656576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 5840, 13963, 27926, 55852, 69815, 111704, 139630, 223408, 279260, 558520, 1019299, 1117040, 2038598, 4077196, 5096495, 8154392, 10192990, 16308784, 20385980, 40771960, 81543920]

約数ペア:

[(1, 81543920), (2, 40771960), (4, 20385980), (5, 16308784), (8, 10192990), (10, 8154392), (16, 5096495), (20, 4077196), (40, 2038598), (73, 1117040), (80, 1019299), (146, 558520), (292, 279260), (365, 223408), (584, 139630), (730, 111704), (1168, 69815), (1460, 55852), (2920, 27926), (5840, 13963)]