21429760

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{761}}^1$

素因数の和:795

約数の個数: 80

約数和(自身を含む): 56125872

約数和(自身を除く): 34696112

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 512, 640, 704, 761, 880, 1280, 1408, 1522, 1760, 2560, 2816, 3044, 3520, 3805, 5632, 6088, 7040, 7610, 8371, 12176, 14080, 15220, 16742, 24352, 28160, 30440, 33484, 41855, 48704, 60880, 66968, 83710, 97408, 121760, 133936, 167420, 194816, 243520, 267872, 334840, 389632, 487040, 535744, 669680, 974080, 1071488, 1339360, 1948160, 2142976, 2678720, 4285952, 5357440, 10714880, 21429760]

約数ペア:

[(1, 21429760), (2, 10714880), (4, 5357440), (5, 4285952), (8, 2678720), (10, 2142976), (11, 1948160), (16, 1339360), (20, 1071488), (22, 974080), (32, 669680), (40, 535744), (44, 487040), (55, 389632), (64, 334840), (80, 267872), (88, 243520), (110, 194816), (128, 167420), (160, 133936), (176, 121760), (220, 97408), (256, 83710), (320, 66968), (352, 60880), (440, 48704), (512, 41855), (640, 33484), (704, 30440), (761, 28160), (880, 24352), (1280, 16742), (1408, 15220), (1522, 14080), (1760, 12176), (2560, 8371), (2816, 7610), (3044, 7040), (3520, 6088), (3805, 5632)]