20815236

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{563}}^1$

素因数の和:665

約数の個数: 72

約数和(自身を含む): 57482880

約数和(自身を除く): 36667644

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 79, 117, 156, 158, 234, 237, 316, 468, 474, 563, 711, 948, 1027, 1126, 1422, 1689, 2054, 2252, 2844, 3081, 3378, 4108, 5067, 6162, 6756, 7319, 9243, 10134, 12324, 14638, 18486, 20268, 21957, 29276, 36972, 43914, 44477, 65871, 87828, 88954, 131742, 133431, 177908, 263484, 266862, 400293, 533724, 578201, 800586, 1156402, 1601172, 1734603, 2312804, 3469206, 5203809, 6938412, 10407618, 20815236]

約数ペア:

[(1, 20815236), (2, 10407618), (3, 6938412), (4, 5203809), (6, 3469206), (9, 2312804), (12, 1734603), (13, 1601172), (18, 1156402), (26, 800586), (36, 578201), (39, 533724), (52, 400293), (78, 266862), (79, 263484), (117, 177908), (156, 133431), (158, 131742), (234, 88954), (237, 87828), (316, 65871), (468, 44477), (474, 43914), (563, 36972), (711, 29276), (948, 21957), (1027, 20268), (1126, 18486), (1422, 14638), (1689, 12324), (2054, 10134), (2252, 9243), (2844, 7319), (3081, 6756), (3378, 6162), (4108, 5067)]