129839720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{419}}^1$

素因数の和:618

約数の個数: 64

約数和(自身を含む): 299980800

約数和(自身を除く): 170141080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 127, 244, 254, 305, 419, 488, 508, 610, 635, 838, 1016, 1220, 1270, 1676, 2095, 2440, 2540, 3352, 4190, 5080, 7747, 8380, 15494, 16760, 25559, 30988, 38735, 51118, 53213, 61976, 77470, 102236, 106426, 127795, 154940, 204472, 212852, 255590, 266065, 309880, 425704, 511180, 532130, 1022360, 1064260, 2128520, 3245993, 6491986, 12983972, 16229965, 25967944, 32459930, 64919860, 129839720]

約数ペア:

[(1, 129839720), (2, 64919860), (4, 32459930), (5, 25967944), (8, 16229965), (10, 12983972), (20, 6491986), (40, 3245993), (61, 2128520), (122, 1064260), (127, 1022360), (244, 532130), (254, 511180), (305, 425704), (419, 309880), (488, 266065), (508, 255590), (610, 212852), (635, 204472), (838, 154940), (1016, 127795), (1220, 106426), (1270, 102236), (1676, 77470), (2095, 61976), (2440, 53213), (2540, 51118), (3352, 38735), (4190, 30988), (5080, 25559), (7747, 16760), (8380, 15494)]