21000879830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{739}}^1\times {\mathrm{13999}}^1$

素因数の和:14781

約数の個数: 64

約数和(自身を含む): 44755200000

約数和(自身を除く): 23754320170

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 739, 1015, 1478, 2030, 3695, 5173, 7390, 10346, 13999, 21431, 25865, 27998, 42862, 51730, 69995, 97993, 107155, 139990, 150017, 195986, 214310, 300034, 405971, 489965, 750085, 811942, 979930, 1500170, 2029855, 2841797, 4059710, 5683594, 10345261, 14208985, 20690522, 28417970, 51726305, 72416827, 103452610, 144833654, 300012569, 362084135, 600025138, 724168270, 1500062845, 2100087983, 3000125690, 4200175966, 10500439915, 21000879830]

約数ペア:

[(1, 21000879830), (2, 10500439915), (5, 4200175966), (7, 3000125690), (10, 2100087983), (14, 1500062845), (29, 724168270), (35, 600025138), (58, 362084135), (70, 300012569), (145, 144833654), (203, 103452610), (290, 72416827), (406, 51726305), (739, 28417970), (1015, 20690522), (1478, 14208985), (2030, 10345261), (3695, 5683594), (5173, 4059710), (7390, 2841797), (10346, 2029855), (13999, 1500170), (21431, 979930), (25865, 811942), (27998, 750085), (42862, 489965), (51730, 405971), (69995, 300034), (97993, 214310), (107155, 195986), (139990, 150017)]