21421120

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:228

約数の個数: 112

約数和(自身を含む): 59545728

約数和(自身を除く): 38124608

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 73, 80, 112, 131, 140, 146, 160, 224, 262, 280, 292, 320, 365, 448, 511, 524, 560, 584, 655, 730, 917, 1022, 1048, 1120, 1168, 1310, 1460, 1834, 2044, 2096, 2240, 2336, 2555, 2620, 2920, 3668, 4088, 4192, 4585, 4672, 5110, 5240, 5840, 7336, 8176, 8384, 9170, 9563, 10220, 10480, 11680, 14672, 16352, 18340, 19126, 20440, 20960, 23360, 29344, 32704, 36680, 38252, 40880, 41920, 47815, 58688, 66941, 73360, 76504, 81760, 95630, 133882, 146720, 153008, 163520, 191260, 267764, 293440, 306016, 334705, 382520, 535528, 612032, 669410, 765040, 1071056, 1338820, 1530080, 2142112, 2677640, 3060160, 4284224, 5355280, 10710560, 21421120]

約数ペア:

[(1, 21421120), (2, 10710560), (4, 5355280), (5, 4284224), (7, 3060160), (8, 2677640), (10, 2142112), (14, 1530080), (16, 1338820), (20, 1071056), (28, 765040), (32, 669410), (35, 612032), (40, 535528), (56, 382520), (64, 334705), (70, 306016), (73, 293440), (80, 267764), (112, 191260), (131, 163520), (140, 153008), (146, 146720), (160, 133882), (224, 95630), (262, 81760), (280, 76504), (292, 73360), (320, 66941), (365, 58688), (448, 47815), (511, 41920), (524, 40880), (560, 38252), (584, 36680), (655, 32704), (730, 29344), (917, 23360), (1022, 20960), (1048, 20440), (1120, 19126), (1168, 18340), (1310, 16352), (1460, 14672), (1834, 11680), (2044, 10480), (2096, 10220), (2240, 9563), (2336, 9170), (2555, 8384), (2620, 8176), (2920, 7336), (3668, 5840), (4088, 5240), (4192, 5110), (4585, 4672)]