20401992

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:403

約数の個数: 96

約数和(自身を含む): 60540480

約数和(自身を除く): 40138488

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 71, 72, 78, 104, 117, 142, 156, 213, 234, 284, 307, 312, 426, 468, 568, 614, 639, 852, 921, 923, 936, 1228, 1278, 1704, 1842, 1846, 2456, 2556, 2763, 2769, 3684, 3692, 3991, 5112, 5526, 5538, 7368, 7384, 7982, 8307, 11052, 11076, 11973, 15964, 16614, 21797, 22104, 22152, 23946, 31928, 33228, 35919, 43594, 47892, 65391, 66456, 71838, 87188, 95784, 130782, 143676, 174376, 196173, 261564, 283361, 287352, 392346, 523128, 566722, 784692, 850083, 1133444, 1569384, 1700166, 2266888, 2550249, 3400332, 5100498, 6800664, 10200996, 20401992]

約数ペア:

[(1, 20401992), (2, 10200996), (3, 6800664), (4, 5100498), (6, 3400332), (8, 2550249), (9, 2266888), (12, 1700166), (13, 1569384), (18, 1133444), (24, 850083), (26, 784692), (36, 566722), (39, 523128), (52, 392346), (71, 287352), (72, 283361), (78, 261564), (104, 196173), (117, 174376), (142, 143676), (156, 130782), (213, 95784), (234, 87188), (284, 71838), (307, 66456), (312, 65391), (426, 47892), (468, 43594), (568, 35919), (614, 33228), (639, 31928), (852, 23946), (921, 22152), (923, 22104), (936, 21797), (1228, 16614), (1278, 15964), (1704, 11973), (1842, 11076), (1846, 11052), (2456, 8307), (2556, 7982), (2763, 7384), (2769, 7368), (3684, 5538), (3692, 5526), (3991, 5112)]