21963390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:401

約数の個数: 64

約数和(自身を含む): 55641600

約数和(自身を除く): 33678210

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 139, 229, 230, 278, 345, 417, 458, 687, 690, 695, 834, 1145, 1374, 1390, 2085, 2290, 3197, 3435, 4170, 5267, 6394, 6870, 9591, 10534, 15801, 15985, 19182, 26335, 31602, 31831, 31970, 47955, 52670, 63662, 79005, 95493, 95910, 158010, 159155, 190986, 318310, 477465, 732113, 954930, 1464226, 2196339, 3660565, 4392678, 7321130, 10981695, 21963390]

約数ペア:

[(1, 21963390), (2, 10981695), (3, 7321130), (5, 4392678), (6, 3660565), (10, 2196339), (15, 1464226), (23, 954930), (30, 732113), (46, 477465), (69, 318310), (115, 190986), (138, 159155), (139, 158010), (229, 95910), (230, 95493), (278, 79005), (345, 63662), (417, 52670), (458, 47955), (687, 31970), (690, 31831), (695, 31602), (834, 26335), (1145, 19182), (1374, 15985), (1390, 15801), (2085, 10534), (2290, 9591), (3197, 6870), (3435, 6394), (4170, 5267)]