20280551328

素因数分解:

$2^5\times 3^2\times {\mathrm{71}}^1\times {\mathrm{991811}}^1$

素因数の和:991898

約数の個数: 72

約数和(自身を含む): 58485170016

約数和(自身を除く): 38204618688

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 71, 72, 96, 142, 144, 213, 284, 288, 426, 568, 639, 852, 1136, 1278, 1704, 2272, 2556, 3408, 5112, 6816, 10224, 20448, 991811, 1983622, 2975433, 3967244, 5950866, 7934488, 8926299, 11901732, 15868976, 17852598, 23803464, 31737952, 35705196, 47606928, 70418581, 71410392, 95213856, 140837162, 142820784, 211255743, 281674324, 285641568, 422511486, 563348648, 633767229, 845022972, 1126697296, 1267534458, 1690045944, 2253394592, 2535068916, 3380091888, 5070137832, 6760183776, 10140275664, 20280551328]

約数ペア:

[(1, 20280551328), (2, 10140275664), (3, 6760183776), (4, 5070137832), (6, 3380091888), (8, 2535068916), (9, 2253394592), (12, 1690045944), (16, 1267534458), (18, 1126697296), (24, 845022972), (32, 633767229), (36, 563348648), (48, 422511486), (71, 285641568), (72, 281674324), (96, 211255743), (142, 142820784), (144, 140837162), (213, 95213856), (284, 71410392), (288, 70418581), (426, 47606928), (568, 35705196), (639, 31737952), (852, 23803464), (1136, 17852598), (1278, 15868976), (1704, 11901732), (2272, 8926299), (2556, 7934488), (3408, 5950866), (5112, 3967244), (6816, 2975433), (10224, 1983622), (20448, 991811)]