21877804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 43168608

約数和(自身を除く): 21290804

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 83, 137, 148, 166, 274, 332, 481, 548, 962, 1079, 1781, 1924, 2158, 3071, 3562, 4316, 5069, 6142, 7124, 10138, 11371, 12284, 20276, 22742, 39923, 45484, 65897, 79846, 131794, 147823, 159692, 263588, 295646, 420727, 591292, 841454, 1682908, 5469451, 10938902, 21877804]

約数ペア:

[(1, 21877804), (2, 10938902), (4, 5469451), (13, 1682908), (26, 841454), (37, 591292), (52, 420727), (74, 295646), (83, 263588), (137, 159692), (148, 147823), (166, 131794), (274, 79846), (332, 65897), (481, 45484), (548, 39923), (962, 22742), (1079, 20276), (1781, 12284), (1924, 11371), (2158, 10138), (3071, 7124), (3562, 6142), (4316, 5069)]