28640140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{659}}^1$

素因数の和:762

約数の個数: 48

約数和(自身を含む): 62868960

約数和(自身を除く): 34228820

約数列:

[1, 2, 4, 5, 10, 20, 41, 53, 82, 106, 164, 205, 212, 265, 410, 530, 659, 820, 1060, 1318, 2173, 2636, 3295, 4346, 6590, 8692, 10865, 13180, 21730, 27019, 34927, 43460, 54038, 69854, 108076, 135095, 139708, 174635, 270190, 349270, 540380, 698540, 1432007, 2864014, 5728028, 7160035, 14320070, 28640140]

約数ペア:

[(1, 28640140), (2, 14320070), (4, 7160035), (5, 5728028), (10, 2864014), (20, 1432007), (41, 698540), (53, 540380), (82, 349270), (106, 270190), (164, 174635), (205, 139708), (212, 135095), (265, 108076), (410, 69854), (530, 54038), (659, 43460), (820, 34927), (1060, 27019), (1318, 21730), (2173, 13180), (2636, 10865), (3295, 8692), (4346, 6590)]