19823780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16249}}^1$

素因数の和:16319

約数の個数: 24

約数和(自身を含む): 42315000

約数和(自身を除く): 22491220

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16249, 32498, 64996, 81245, 162490, 324980, 991189, 1982378, 3964756, 4955945, 9911890, 19823780]

約数ペア:

[(1, 19823780), (2, 9911890), (4, 4955945), (5, 3964756), (10, 1982378), (20, 991189), (61, 324980), (122, 162490), (244, 81245), (305, 64996), (610, 32498), (1220, 16249)]