90136840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{463}}^1$

素因数の和:662

約数の個数: 64

約数和(自身を含む): 211138560

約数和(自身を除く): 121001720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 157, 248, 310, 314, 463, 620, 628, 785, 926, 1240, 1256, 1570, 1852, 2315, 3140, 3704, 4630, 4867, 6280, 9260, 9734, 14353, 18520, 19468, 24335, 28706, 38936, 48670, 57412, 71765, 72691, 97340, 114824, 143530, 145382, 194680, 287060, 290764, 363455, 574120, 581528, 726910, 1453820, 2253421, 2907640, 4506842, 9013684, 11267105, 18027368, 22534210, 45068420, 90136840]

約数ペア:

[(1, 90136840), (2, 45068420), (4, 22534210), (5, 18027368), (8, 11267105), (10, 9013684), (20, 4506842), (31, 2907640), (40, 2253421), (62, 1453820), (124, 726910), (155, 581528), (157, 574120), (248, 363455), (310, 290764), (314, 287060), (463, 194680), (620, 145382), (628, 143530), (785, 114824), (926, 97340), (1240, 72691), (1256, 71765), (1570, 57412), (1852, 48670), (2315, 38936), (3140, 28706), (3704, 24335), (4630, 19468), (4867, 18520), (6280, 14353), (9260, 9734)]