19641080

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1$

素因数の和:648

約数の個数: 64

約数和(自身を含む): 47442240

約数和(自身を除く): 27801160

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 37, 40, 46, 74, 92, 115, 148, 184, 185, 230, 296, 370, 460, 577, 740, 851, 920, 1154, 1480, 1702, 2308, 2885, 3404, 4255, 4616, 5770, 6808, 8510, 11540, 13271, 17020, 21349, 23080, 26542, 34040, 42698, 53084, 66355, 85396, 106168, 106745, 132710, 170792, 213490, 265420, 426980, 491027, 530840, 853960, 982054, 1964108, 2455135, 3928216, 4910270, 9820540, 19641080]

約数ペア:

[(1, 19641080), (2, 9820540), (4, 4910270), (5, 3928216), (8, 2455135), (10, 1964108), (20, 982054), (23, 853960), (37, 530840), (40, 491027), (46, 426980), (74, 265420), (92, 213490), (115, 170792), (148, 132710), (184, 106745), (185, 106168), (230, 85396), (296, 66355), (370, 53084), (460, 42698), (577, 34040), (740, 26542), (851, 23080), (920, 21349), (1154, 17020), (1480, 13271), (1702, 11540), (2308, 8510), (2885, 6808), (3404, 5770), (4255, 4616)]