1639231720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{158227}}^1$

素因数の和:158282

約数の個数: 64

約数和(自身を含む): 4329118080

約数和(自身を除く): 2689886360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 2072, 2590, 5180, 10360, 158227, 316454, 632908, 791135, 1107589, 1265816, 1582270, 2215178, 3164540, 4430356, 5537945, 5854399, 6329080, 8860712, 11075890, 11708798, 22151780, 23417596, 29271995, 40980793, 44303560, 46835192, 58543990, 81961586, 117087980, 163923172, 204903965, 234175960, 327846344, 409807930, 819615860, 1639231720]

約数ペア:

[(1, 1639231720), (2, 819615860), (4, 409807930), (5, 327846344), (7, 234175960), (8, 204903965), (10, 163923172), (14, 117087980), (20, 81961586), (28, 58543990), (35, 46835192), (37, 44303560), (40, 40980793), (56, 29271995), (70, 23417596), (74, 22151780), (140, 11708798), (148, 11075890), (185, 8860712), (259, 6329080), (280, 5854399), (296, 5537945), (370, 4430356), (518, 3164540), (740, 2215178), (1036, 1582270), (1295, 1265816), (1480, 1107589), (2072, 791135), (2590, 632908), (5180, 316454), (10360, 158227)]