21661938

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 51955200

約数和(自身を除く): 30293262

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 43, 54, 57, 86, 114, 129, 171, 258, 342, 387, 491, 513, 774, 817, 982, 1026, 1161, 1473, 1634, 2322, 2451, 2946, 4419, 4902, 7353, 8838, 9329, 13257, 14706, 18658, 21113, 22059, 26514, 27987, 42226, 44118, 55974, 63339, 83961, 126678, 167922, 190017, 251883, 380034, 401147, 503766, 570051, 802294, 1140102, 1203441, 2406882, 3610323, 7220646, 10830969, 21661938]

約数ペア:

[(1, 21661938), (2, 10830969), (3, 7220646), (6, 3610323), (9, 2406882), (18, 1203441), (19, 1140102), (27, 802294), (38, 570051), (43, 503766), (54, 401147), (57, 380034), (86, 251883), (114, 190017), (129, 167922), (171, 126678), (258, 83961), (342, 63339), (387, 55974), (491, 44118), (513, 42226), (774, 27987), (817, 26514), (982, 22059), (1026, 21113), (1161, 18658), (1473, 14706), (1634, 13257), (2322, 9329), (2451, 8838), (2946, 7353), (4419, 4902)]