154819420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{239}}^1\times {\mathrm{661}}^1$

素因数の和:923

約数の個数: 72

約数和(自身を含む): 380358720

約数和(自身を除く): 225539300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 239, 245, 478, 490, 661, 956, 980, 1195, 1322, 1673, 2390, 2644, 3305, 3346, 4627, 4780, 6610, 6692, 8365, 9254, 11711, 13220, 16730, 18508, 23135, 23422, 32389, 33460, 46270, 46844, 58555, 64778, 92540, 117110, 129556, 157979, 161945, 234220, 315958, 323890, 631916, 647780, 789895, 1105853, 1579790, 2211706, 3159580, 4423412, 5529265, 7740971, 11058530, 15481942, 22117060, 30963884, 38704855, 77409710, 154819420]

約数ペア:

[(1, 154819420), (2, 77409710), (4, 38704855), (5, 30963884), (7, 22117060), (10, 15481942), (14, 11058530), (20, 7740971), (28, 5529265), (35, 4423412), (49, 3159580), (70, 2211706), (98, 1579790), (140, 1105853), (196, 789895), (239, 647780), (245, 631916), (478, 323890), (490, 315958), (661, 234220), (956, 161945), (980, 157979), (1195, 129556), (1322, 117110), (1673, 92540), (2390, 64778), (2644, 58555), (3305, 46844), (3346, 46270), (4627, 33460), (4780, 32389), (6610, 23422), (6692, 23135), (8365, 18508), (9254, 16730), (11711, 13220)]