123161480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{991}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 299980800

約数和(自身を除く): 176819320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 239, 260, 478, 520, 956, 991, 1195, 1912, 1982, 2390, 3107, 3964, 4780, 4955, 6214, 7928, 9560, 9910, 12428, 12883, 15535, 19820, 24856, 25766, 31070, 39640, 51532, 62140, 64415, 103064, 124280, 128830, 236849, 257660, 473698, 515320, 947396, 1184245, 1894792, 2368490, 3079037, 4736980, 6158074, 9473960, 12316148, 15395185, 24632296, 30790370, 61580740, 123161480]

約数ペア:

[(1, 123161480), (2, 61580740), (4, 30790370), (5, 24632296), (8, 15395185), (10, 12316148), (13, 9473960), (20, 6158074), (26, 4736980), (40, 3079037), (52, 2368490), (65, 1894792), (104, 1184245), (130, 947396), (239, 515320), (260, 473698), (478, 257660), (520, 236849), (956, 128830), (991, 124280), (1195, 103064), (1912, 64415), (1982, 62140), (2390, 51532), (3107, 39640), (3964, 31070), (4780, 25766), (4955, 24856), (6214, 19820), (7928, 15535), (9560, 12883), (9910, 12428)]