21912054

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 49282560

約数和(自身を除く): 27370506

約数列:

[1, 2, 3, 6, 19, 23, 38, 46, 57, 61, 69, 114, 122, 137, 138, 183, 274, 366, 411, 437, 822, 874, 1159, 1311, 1403, 2318, 2603, 2622, 2806, 3151, 3477, 4209, 5206, 6302, 6954, 7809, 8357, 8418, 9453, 15618, 16714, 18906, 25071, 26657, 50142, 53314, 59869, 79971, 119738, 158783, 159942, 179607, 192211, 317566, 359214, 384422, 476349, 576633, 952698, 1153266, 3652009, 7304018, 10956027, 21912054]

約数ペア:

[(1, 21912054), (2, 10956027), (3, 7304018), (6, 3652009), (19, 1153266), (23, 952698), (38, 576633), (46, 476349), (57, 384422), (61, 359214), (69, 317566), (114, 192211), (122, 179607), (137, 159942), (138, 158783), (183, 119738), (274, 79971), (366, 59869), (411, 53314), (437, 50142), (822, 26657), (874, 25071), (1159, 18906), (1311, 16714), (1403, 15618), (2318, 9453), (2603, 8418), (2622, 8357), (2806, 7809), (3151, 6954), (3477, 6302), (4209, 5206)]