21225888

素因数分解:

$2^5\times 3^4\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:472

約数の個数: 120

約数和(自身を含む): 65862720

約数和(自身を除く): 44636832

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 27, 32, 36, 38, 48, 54, 57, 72, 76, 81, 96, 108, 114, 144, 152, 162, 171, 216, 228, 288, 304, 324, 342, 431, 432, 456, 513, 608, 648, 684, 862, 864, 912, 1026, 1293, 1296, 1368, 1539, 1724, 1824, 2052, 2586, 2592, 2736, 3078, 3448, 3879, 4104, 5172, 5472, 6156, 6896, 7758, 8189, 8208, 10344, 11637, 12312, 13792, 15516, 16378, 16416, 20688, 23274, 24567, 24624, 31032, 32756, 34911, 41376, 46548, 49134, 49248, 62064, 65512, 69822, 73701, 93096, 98268, 124128, 131024, 139644, 147402, 186192, 196536, 221103, 262048, 279288, 294804, 372384, 393072, 442206, 558576, 589608, 663309, 786144, 884412, 1117152, 1179216, 1326618, 1768824, 2358432, 2653236, 3537648, 5306472, 7075296, 10612944, 21225888]

約数ペア:

[(1, 21225888), (2, 10612944), (3, 7075296), (4, 5306472), (6, 3537648), (8, 2653236), (9, 2358432), (12, 1768824), (16, 1326618), (18, 1179216), (19, 1117152), (24, 884412), (27, 786144), (32, 663309), (36, 589608), (38, 558576), (48, 442206), (54, 393072), (57, 372384), (72, 294804), (76, 279288), (81, 262048), (96, 221103), (108, 196536), (114, 186192), (144, 147402), (152, 139644), (162, 131024), (171, 124128), (216, 98268), (228, 93096), (288, 73701), (304, 69822), (324, 65512), (342, 62064), (431, 49248), (432, 49134), (456, 46548), (513, 41376), (608, 34911), (648, 32756), (684, 31032), (862, 24624), (864, 24567), (912, 23274), (1026, 20688), (1293, 16416), (1296, 16378), (1368, 15516), (1539, 13792), (1724, 12312), (1824, 11637), (2052, 10344), (2586, 8208), (2592, 8189), (2736, 7758), (3078, 6896), (3448, 6156), (3879, 5472), (4104, 5172)]