18723880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{233}}^1$

素因数の和:299

約数の個数: 96

約数和(自身を含む): 50417640

約数和(自身を除く): 31693760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 49, 56, 70, 82, 98, 140, 164, 196, 205, 233, 245, 280, 287, 328, 392, 410, 466, 490, 574, 820, 932, 980, 1148, 1165, 1435, 1631, 1640, 1864, 1960, 2009, 2296, 2330, 2870, 3262, 4018, 4660, 5740, 6524, 8036, 8155, 9320, 9553, 10045, 11417, 11480, 13048, 16072, 16310, 19106, 20090, 22834, 32620, 38212, 40180, 45668, 47765, 57085, 65240, 66871, 76424, 80360, 91336, 95530, 114170, 133742, 191060, 228340, 267484, 334355, 382120, 456680, 468097, 534968, 668710, 936194, 1337420, 1872388, 2340485, 2674840, 3744776, 4680970, 9361940, 18723880]

約数ペア:

[(1, 18723880), (2, 9361940), (4, 4680970), (5, 3744776), (7, 2674840), (8, 2340485), (10, 1872388), (14, 1337420), (20, 936194), (28, 668710), (35, 534968), (40, 468097), (41, 456680), (49, 382120), (56, 334355), (70, 267484), (82, 228340), (98, 191060), (140, 133742), (164, 114170), (196, 95530), (205, 91336), (233, 80360), (245, 76424), (280, 66871), (287, 65240), (328, 57085), (392, 47765), (410, 45668), (466, 40180), (490, 38212), (574, 32620), (820, 22834), (932, 20090), (980, 19106), (1148, 16310), (1165, 16072), (1435, 13048), (1631, 11480), (1640, 11417), (1864, 10045), (1960, 9553), (2009, 9320), (2296, 8155), (2330, 8036), (2870, 6524), (3262, 5740), (4018, 4660)]