21399540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8699}}^1$

素因数の和:8752

約数の個数: 48

約数和(自身を含む): 61387200

約数和(自身を除く): 39987660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8699, 17398, 26097, 34796, 43495, 52194, 86990, 104388, 130485, 173980, 260970, 356659, 521940, 713318, 1069977, 1426636, 1783295, 2139954, 3566590, 4279908, 5349885, 7133180, 10699770, 21399540]

約数ペア:

[(1, 21399540), (2, 10699770), (3, 7133180), (4, 5349885), (5, 4279908), (6, 3566590), (10, 2139954), (12, 1783295), (15, 1426636), (20, 1069977), (30, 713318), (41, 521940), (60, 356659), (82, 260970), (123, 173980), (164, 130485), (205, 104388), (246, 86990), (410, 52194), (492, 43495), (615, 34796), (820, 26097), (1230, 17398), (2460, 8699)]