64919860

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{419}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 139991040

約数和(自身を除く): 75071180

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 127, 244, 254, 305, 419, 508, 610, 635, 838, 1220, 1270, 1676, 2095, 2540, 4190, 7747, 8380, 15494, 25559, 30988, 38735, 51118, 53213, 77470, 102236, 106426, 127795, 154940, 212852, 255590, 266065, 511180, 532130, 1064260, 3245993, 6491986, 12983972, 16229965, 32459930, 64919860]

約数ペア:

[(1, 64919860), (2, 32459930), (4, 16229965), (5, 12983972), (10, 6491986), (20, 3245993), (61, 1064260), (122, 532130), (127, 511180), (244, 266065), (254, 255590), (305, 212852), (419, 154940), (508, 127795), (610, 106426), (635, 102236), (838, 77470), (1220, 53213), (1270, 51118), (1676, 38735), (2095, 30988), (2540, 25559), (4190, 15494), (7747, 8380)]