161879560

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 371142000

約数和(自身を除く): 209262440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 157, 173, 298, 314, 346, 596, 628, 692, 745, 785, 865, 1192, 1256, 1384, 1490, 1570, 1730, 2980, 3140, 3460, 5960, 6280, 6920, 23393, 25777, 27161, 46786, 51554, 54322, 93572, 103108, 108644, 116965, 128885, 135805, 187144, 206216, 217288, 233930, 257770, 271610, 467860, 515540, 543220, 935720, 1031080, 1086440, 4046989, 8093978, 16187956, 20234945, 32375912, 40469890, 80939780, 161879560]

約数ペア:

[(1, 161879560), (2, 80939780), (4, 40469890), (5, 32375912), (8, 20234945), (10, 16187956), (20, 8093978), (40, 4046989), (149, 1086440), (157, 1031080), (173, 935720), (298, 543220), (314, 515540), (346, 467860), (596, 271610), (628, 257770), (692, 233930), (745, 217288), (785, 206216), (865, 187144), (1192, 135805), (1256, 128885), (1384, 116965), (1490, 108644), (1570, 103108), (1730, 93572), (2980, 54322), (3140, 51554), (3460, 46786), (5960, 27161), (6280, 25777), (6920, 23393)]