21940436

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 48416256

約数和(自身を除く): 26475820

約数列:

[1, 2, 4, 7, 14, 23, 28, 31, 46, 49, 62, 92, 98, 124, 157, 161, 196, 217, 314, 322, 434, 628, 644, 713, 868, 1099, 1127, 1426, 1519, 2198, 2254, 2852, 3038, 3611, 4396, 4508, 4867, 4991, 6076, 7222, 7693, 9734, 9982, 14444, 15386, 19468, 19964, 25277, 30772, 34069, 34937, 50554, 68138, 69874, 101108, 111941, 136276, 139748, 176939, 223882, 238483, 353878, 447764, 476966, 707756, 783587, 953932, 1567174, 3134348, 5485109, 10970218, 21940436]

約数ペア:

[(1, 21940436), (2, 10970218), (4, 5485109), (7, 3134348), (14, 1567174), (23, 953932), (28, 783587), (31, 707756), (46, 476966), (49, 447764), (62, 353878), (92, 238483), (98, 223882), (124, 176939), (157, 139748), (161, 136276), (196, 111941), (217, 101108), (314, 69874), (322, 68138), (434, 50554), (628, 34937), (644, 34069), (713, 30772), (868, 25277), (1099, 19964), (1127, 19468), (1426, 15386), (1519, 14444), (2198, 9982), (2254, 9734), (2852, 7693), (3038, 7222), (3611, 6076), (4396, 4991), (4508, 4867)]