17806940

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 38701152

約数和(自身を除く): 20894212

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 107, 157, 212, 214, 265, 314, 428, 530, 535, 628, 785, 1060, 1070, 1570, 2140, 3140, 5671, 8321, 11342, 16642, 16799, 22684, 28355, 33284, 33598, 41605, 56710, 67196, 83210, 83995, 113420, 166420, 167990, 335980, 890347, 1780694, 3561388, 4451735, 8903470, 17806940]

約数ペア:

[(1, 17806940), (2, 8903470), (4, 4451735), (5, 3561388), (10, 1780694), (20, 890347), (53, 335980), (106, 167990), (107, 166420), (157, 113420), (212, 83995), (214, 83210), (265, 67196), (314, 56710), (428, 41605), (530, 33598), (535, 33284), (628, 28355), (785, 22684), (1060, 16799), (1070, 16642), (1570, 11342), (2140, 8321), (3140, 5671)]