21310160

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:216

約数の個数: 80

約数和(自身を含む): 52027920

約数和(自身を除く): 30717760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 73, 80, 82, 89, 146, 164, 178, 205, 292, 328, 356, 365, 410, 445, 584, 656, 712, 730, 820, 890, 1168, 1424, 1460, 1640, 1780, 2920, 2993, 3280, 3560, 3649, 5840, 5986, 6497, 7120, 7298, 11972, 12994, 14596, 14965, 18245, 23944, 25988, 29192, 29930, 32485, 36490, 47888, 51976, 58384, 59860, 64970, 72980, 103952, 119720, 129940, 145960, 239440, 259880, 266377, 291920, 519760, 532754, 1065508, 1331885, 2131016, 2663770, 4262032, 5327540, 10655080, 21310160]

約数ペア:

[(1, 21310160), (2, 10655080), (4, 5327540), (5, 4262032), (8, 2663770), (10, 2131016), (16, 1331885), (20, 1065508), (40, 532754), (41, 519760), (73, 291920), (80, 266377), (82, 259880), (89, 239440), (146, 145960), (164, 129940), (178, 119720), (205, 103952), (292, 72980), (328, 64970), (356, 59860), (365, 58384), (410, 51976), (445, 47888), (584, 36490), (656, 32485), (712, 29930), (730, 29192), (820, 25988), (890, 23944), (1168, 18245), (1424, 14965), (1460, 14596), (1640, 12994), (1780, 11972), (2920, 7298), (2993, 7120), (3280, 6497), (3560, 5986), (3649, 5840)]