81734480

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{521}}^1$

素因数の和:624

約数の個数: 80

約数和(自身を含む): 199232784

約数和(自身を除く): 117498304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 53, 74, 80, 106, 148, 185, 212, 265, 296, 370, 424, 521, 530, 592, 740, 848, 1042, 1060, 1480, 1961, 2084, 2120, 2605, 2960, 3922, 4168, 4240, 5210, 7844, 8336, 9805, 10420, 15688, 19277, 19610, 20840, 27613, 31376, 38554, 39220, 41680, 55226, 77108, 78440, 96385, 110452, 138065, 154216, 156880, 192770, 220904, 276130, 308432, 385540, 441808, 552260, 771080, 1021681, 1104520, 1542160, 2043362, 2209040, 4086724, 5108405, 8173448, 10216810, 16346896, 20433620, 40867240, 81734480]

約数ペア:

[(1, 81734480), (2, 40867240), (4, 20433620), (5, 16346896), (8, 10216810), (10, 8173448), (16, 5108405), (20, 4086724), (37, 2209040), (40, 2043362), (53, 1542160), (74, 1104520), (80, 1021681), (106, 771080), (148, 552260), (185, 441808), (212, 385540), (265, 308432), (296, 276130), (370, 220904), (424, 192770), (521, 156880), (530, 154216), (592, 138065), (740, 110452), (848, 96385), (1042, 78440), (1060, 77108), (1480, 55226), (1961, 41680), (2084, 39220), (2120, 38554), (2605, 31376), (2960, 27613), (3922, 20840), (4168, 19610), (4240, 19277), (5210, 15688), (7844, 10420), (8336, 9805)]