21556836

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{653}}^1$

素因数の和:801

約数の個数: 72

約数和(自身を含む): 62846784

約数和(自身を除く): 41289948

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 131, 252, 262, 393, 524, 653, 786, 917, 1179, 1306, 1572, 1834, 1959, 2358, 2612, 2751, 3668, 3918, 4571, 4716, 5502, 5877, 7836, 8253, 9142, 11004, 11754, 13713, 16506, 18284, 23508, 27426, 33012, 41139, 54852, 82278, 85543, 164556, 171086, 256629, 342172, 513258, 598801, 769887, 1026516, 1197602, 1539774, 1796403, 2395204, 3079548, 3592806, 5389209, 7185612, 10778418, 21556836]

約数ペア:

[(1, 21556836), (2, 10778418), (3, 7185612), (4, 5389209), (6, 3592806), (7, 3079548), (9, 2395204), (12, 1796403), (14, 1539774), (18, 1197602), (21, 1026516), (28, 769887), (36, 598801), (42, 513258), (63, 342172), (84, 256629), (126, 171086), (131, 164556), (252, 85543), (262, 82278), (393, 54852), (524, 41139), (653, 33012), (786, 27426), (917, 23508), (1179, 18284), (1306, 16506), (1572, 13713), (1834, 11754), (1959, 11004), (2358, 9142), (2612, 8253), (2751, 7836), (3668, 5877), (3918, 5502), (4571, 4716)]