20455320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{373}}^1\times {\mathrm{457}}^1$

素因数の和:844

約数の個数: 64

約数和(自身を含む): 61665120

約数和(自身を除く): 41209800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 373, 457, 746, 914, 1119, 1371, 1492, 1828, 1865, 2238, 2285, 2742, 2984, 3656, 3730, 4476, 4570, 5484, 5595, 6855, 7460, 8952, 9140, 10968, 11190, 13710, 14920, 18280, 22380, 27420, 44760, 54840, 170461, 340922, 511383, 681844, 852305, 1022766, 1363688, 1704610, 2045532, 2556915, 3409220, 4091064, 5113830, 6818440, 10227660, 20455320]

約数ペア:

[(1, 20455320), (2, 10227660), (3, 6818440), (4, 5113830), (5, 4091064), (6, 3409220), (8, 2556915), (10, 2045532), (12, 1704610), (15, 1363688), (20, 1022766), (24, 852305), (30, 681844), (40, 511383), (60, 340922), (120, 170461), (373, 54840), (457, 44760), (746, 27420), (914, 22380), (1119, 18280), (1371, 14920), (1492, 13710), (1828, 11190), (1865, 10968), (2238, 9140), (2285, 8952), (2742, 7460), (2984, 6855), (3656, 5595), (3730, 5484), (4476, 4570)]