20199520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{499}}^1$

素因数の和:548

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 34232480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 80, 88, 92, 110, 115, 160, 176, 184, 220, 230, 253, 352, 368, 440, 460, 499, 506, 736, 880, 920, 998, 1012, 1265, 1760, 1840, 1996, 2024, 2495, 2530, 3680, 3992, 4048, 4990, 5060, 5489, 7984, 8096, 9980, 10120, 10978, 11477, 15968, 19960, 20240, 21956, 22954, 27445, 39920, 40480, 43912, 45908, 54890, 57385, 79840, 87824, 91816, 109780, 114770, 126247, 175648, 183632, 219560, 229540, 252494, 367264, 439120, 459080, 504988, 631235, 878240, 918160, 1009976, 1262470, 1836320, 2019952, 2524940, 4039904, 5049880, 10099760, 20199520]

約数ペア:

[(1, 20199520), (2, 10099760), (4, 5049880), (5, 4039904), (8, 2524940), (10, 2019952), (11, 1836320), (16, 1262470), (20, 1009976), (22, 918160), (23, 878240), (32, 631235), (40, 504988), (44, 459080), (46, 439120), (55, 367264), (80, 252494), (88, 229540), (92, 219560), (110, 183632), (115, 175648), (160, 126247), (176, 114770), (184, 109780), (220, 91816), (230, 87824), (253, 79840), (352, 57385), (368, 54890), (440, 45908), (460, 43912), (499, 40480), (506, 39920), (736, 27445), (880, 22954), (920, 21956), (998, 20240), (1012, 19960), (1265, 15968), (1760, 11477), (1840, 10978), (1996, 10120), (2024, 9980), (2495, 8096), (2530, 7984), (3680, 5489), (3992, 5060), (4048, 4990)]