20455890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:216

約数の個数: 128

約数和(自身を含む): 61931520

約数和(自身を除く): 41475630

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 59, 65, 70, 78, 91, 105, 118, 127, 130, 177, 182, 195, 210, 254, 273, 295, 354, 381, 390, 413, 455, 546, 590, 635, 762, 767, 826, 885, 889, 910, 1239, 1270, 1365, 1534, 1651, 1770, 1778, 1905, 2065, 2301, 2478, 2667, 2730, 3302, 3810, 3835, 4130, 4445, 4602, 4953, 5334, 5369, 6195, 7493, 7670, 8255, 8890, 9906, 10738, 11505, 11557, 12390, 13335, 14986, 16107, 16510, 22479, 23010, 23114, 24765, 26670, 26845, 32214, 34671, 37465, 44958, 49530, 52451, 53690, 57785, 69342, 74930, 80535, 97409, 104902, 112395, 115570, 157353, 161070, 173355, 194818, 224790, 262255, 292227, 314706, 346710, 487045, 524510, 584454, 681863, 786765, 974090, 1363726, 1461135, 1573530, 2045589, 2922270, 3409315, 4091178, 6818630, 10227945, 20455890]

約数ペア:

[(1, 20455890), (2, 10227945), (3, 6818630), (5, 4091178), (6, 3409315), (7, 2922270), (10, 2045589), (13, 1573530), (14, 1461135), (15, 1363726), (21, 974090), (26, 786765), (30, 681863), (35, 584454), (39, 524510), (42, 487045), (59, 346710), (65, 314706), (70, 292227), (78, 262255), (91, 224790), (105, 194818), (118, 173355), (127, 161070), (130, 157353), (177, 115570), (182, 112395), (195, 104902), (210, 97409), (254, 80535), (273, 74930), (295, 69342), (354, 57785), (381, 53690), (390, 52451), (413, 49530), (455, 44958), (546, 37465), (590, 34671), (635, 32214), (762, 26845), (767, 26670), (826, 24765), (885, 23114), (889, 23010), (910, 22479), (1239, 16510), (1270, 16107), (1365, 14986), (1534, 13335), (1651, 12390), (1770, 11557), (1778, 11505), (1905, 10738), (2065, 9906), (2301, 8890), (2478, 8255), (2667, 7670), (2730, 7493), (3302, 6195), (3810, 5369), (3835, 5334), (4130, 4953), (4445, 4602)]