201987140

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{271}}^1\times {\mathrm{449}}^1$

素因数の和:812

約数の個数: 48

約数和(自身を含む): 431827200

約数和(自身を除く): 229840060

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 271, 332, 415, 449, 542, 830, 898, 1084, 1355, 1660, 1796, 2245, 2710, 4490, 5420, 8980, 22493, 37267, 44986, 74534, 89972, 112465, 121679, 149068, 186335, 224930, 243358, 372670, 449860, 486716, 608395, 745340, 1216790, 2433580, 10099357, 20198714, 40397428, 50496785, 100993570, 201987140]

約数ペア:

[(1, 201987140), (2, 100993570), (4, 50496785), (5, 40397428), (10, 20198714), (20, 10099357), (83, 2433580), (166, 1216790), (271, 745340), (332, 608395), (415, 486716), (449, 449860), (542, 372670), (830, 243358), (898, 224930), (1084, 186335), (1355, 149068), (1660, 121679), (1796, 112465), (2245, 89972), (2710, 74534), (4490, 44986), (5420, 37267), (8980, 22493)]