18747160

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 25576040

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 53, 74, 106, 148, 185, 212, 239, 265, 296, 370, 424, 478, 530, 740, 956, 1060, 1195, 1480, 1912, 1961, 2120, 2390, 3922, 4780, 7844, 8843, 9560, 9805, 12667, 15688, 17686, 19610, 25334, 35372, 39220, 44215, 50668, 63335, 70744, 78440, 88430, 101336, 126670, 176860, 253340, 353720, 468679, 506680, 937358, 1874716, 2343395, 3749432, 4686790, 9373580, 18747160]

約数ペア:

[(1, 18747160), (2, 9373580), (4, 4686790), (5, 3749432), (8, 2343395), (10, 1874716), (20, 937358), (37, 506680), (40, 468679), (53, 353720), (74, 253340), (106, 176860), (148, 126670), (185, 101336), (212, 88430), (239, 78440), (265, 70744), (296, 63335), (370, 50668), (424, 44215), (478, 39220), (530, 35372), (740, 25334), (956, 19610), (1060, 17686), (1195, 15688), (1480, 12667), (1912, 9805), (1961, 9560), (2120, 8843), (2390, 7844), (3922, 4780)]