21269612

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{823}}^1$

素因数の和:918

約数の個数: 48

約数和(自身を含む): 46513152

約数和(自身を除く): 25243540

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 71, 91, 142, 182, 284, 364, 497, 823, 923, 994, 1646, 1846, 1988, 3292, 3692, 5761, 6461, 10699, 11522, 12922, 21398, 23044, 25844, 42796, 58433, 74893, 116866, 149786, 233732, 299572, 409031, 759629, 818062, 1519258, 1636124, 3038516, 5317403, 10634806, 21269612]

約数ペア:

[(1, 21269612), (2, 10634806), (4, 5317403), (7, 3038516), (13, 1636124), (14, 1519258), (26, 818062), (28, 759629), (52, 409031), (71, 299572), (91, 233732), (142, 149786), (182, 116866), (284, 74893), (364, 58433), (497, 42796), (823, 25844), (923, 23044), (994, 21398), (1646, 12922), (1846, 11522), (1988, 10699), (3292, 6461), (3692, 5761)]