21208968

素因数分解:

$2^3\times 3^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:523

約数の個数: 96

約数和(自身を含む): 63835200

約数和(自身を除く): 42626232

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 33, 36, 44, 61, 66, 72, 88, 99, 122, 132, 183, 198, 244, 264, 366, 396, 439, 488, 549, 671, 732, 792, 878, 1098, 1317, 1342, 1464, 1756, 2013, 2196, 2634, 2684, 3512, 3951, 4026, 4392, 4829, 5268, 5368, 6039, 7902, 8052, 9658, 10536, 12078, 14487, 15804, 16104, 19316, 24156, 26779, 28974, 31608, 38632, 43461, 48312, 53558, 57948, 80337, 86922, 107116, 115896, 160674, 173844, 214232, 241011, 294569, 321348, 347688, 482022, 589138, 642696, 883707, 964044, 1178276, 1767414, 1928088, 2356552, 2651121, 3534828, 5302242, 7069656, 10604484, 21208968]

約数ペア:

[(1, 21208968), (2, 10604484), (3, 7069656), (4, 5302242), (6, 3534828), (8, 2651121), (9, 2356552), (11, 1928088), (12, 1767414), (18, 1178276), (22, 964044), (24, 883707), (33, 642696), (36, 589138), (44, 482022), (61, 347688), (66, 321348), (72, 294569), (88, 241011), (99, 214232), (122, 173844), (132, 160674), (183, 115896), (198, 107116), (244, 86922), (264, 80337), (366, 57948), (396, 53558), (439, 48312), (488, 43461), (549, 38632), (671, 31608), (732, 28974), (792, 26779), (878, 24156), (1098, 19316), (1317, 16104), (1342, 15804), (1464, 14487), (1756, 12078), (2013, 10536), (2196, 9658), (2634, 8052), (2684, 7902), (3512, 6039), (3951, 5368), (4026, 5268), (4392, 4829)]