21781188

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4231}}^1$

素因数の和:4265

約数の個数: 72

約数和(自身を含む): 64698816

約数和(自身を除く): 42917628

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 13, 18, 22, 26, 33, 36, 39, 44, 52, 66, 78, 99, 117, 132, 143, 156, 198, 234, 286, 396, 429, 468, 572, 858, 1287, 1716, 2574, 4231, 5148, 8462, 12693, 16924, 25386, 38079, 46541, 50772, 55003, 76158, 93082, 110006, 139623, 152316, 165009, 186164, 220012, 279246, 330018, 418869, 495027, 558492, 605033, 660036, 837738, 990054, 1210066, 1675476, 1815099, 1980108, 2420132, 3630198, 5445297, 7260396, 10890594, 21781188]

約数ペア:

[(1, 21781188), (2, 10890594), (3, 7260396), (4, 5445297), (6, 3630198), (9, 2420132), (11, 1980108), (12, 1815099), (13, 1675476), (18, 1210066), (22, 990054), (26, 837738), (33, 660036), (36, 605033), (39, 558492), (44, 495027), (52, 418869), (66, 330018), (78, 279246), (99, 220012), (117, 186164), (132, 165009), (143, 152316), (156, 139623), (198, 110006), (234, 93082), (286, 76158), (396, 55003), (429, 50772), (468, 46541), (572, 38079), (858, 25386), (1287, 16924), (1716, 12693), (2574, 8462), (4231, 5148)]