20338900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:313

約数の個数: 72

約数和(自身を含む): 47496960

約数和(自身を除く): 27158060

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 37, 46, 50, 74, 92, 100, 115, 148, 185, 230, 239, 370, 460, 478, 575, 740, 851, 925, 956, 1150, 1195, 1702, 1850, 2300, 2390, 3404, 3700, 4255, 4780, 5497, 5975, 8510, 8843, 10994, 11950, 17020, 17686, 21275, 21988, 23900, 27485, 35372, 42550, 44215, 54970, 85100, 88430, 109940, 137425, 176860, 203389, 221075, 274850, 406778, 442150, 549700, 813556, 884300, 1016945, 2033890, 4067780, 5084725, 10169450, 20338900]

約数ペア:

[(1, 20338900), (2, 10169450), (4, 5084725), (5, 4067780), (10, 2033890), (20, 1016945), (23, 884300), (25, 813556), (37, 549700), (46, 442150), (50, 406778), (74, 274850), (92, 221075), (100, 203389), (115, 176860), (148, 137425), (185, 109940), (230, 88430), (239, 85100), (370, 54970), (460, 44215), (478, 42550), (575, 35372), (740, 27485), (851, 23900), (925, 21988), (956, 21275), (1150, 17686), (1195, 17020), (1702, 11950), (1850, 10994), (2300, 8843), (2390, 8510), (3404, 5975), (3700, 5497), (4255, 4780)]