398273200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{401}}^1$

素因数の和:623

約数の個数: 120

約数和(自身を含む): 1038433536

約数和(自身を除く): 640160336

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 191, 200, 208, 260, 325, 382, 400, 401, 520, 650, 764, 802, 955, 1040, 1300, 1528, 1604, 1910, 2005, 2483, 2600, 3056, 3208, 3820, 4010, 4775, 4966, 5200, 5213, 6416, 7640, 8020, 9550, 9932, 10025, 10426, 12415, 15280, 16040, 19100, 19864, 20050, 20852, 24830, 26065, 32080, 38200, 39728, 40100, 41704, 49660, 52130, 62075, 76400, 76591, 80200, 83408, 99320, 104260, 124150, 130325, 153182, 160400, 198640, 208520, 248300, 260650, 306364, 382955, 417040, 496600, 521300, 612728, 765910, 993200, 995683, 1042600, 1225456, 1531820, 1914775, 1991366, 2085200, 3063640, 3829550, 3982732, 4978415, 6127280, 7659100, 7965464, 9956830, 15318200, 15930928, 19913660, 24892075, 30636400, 39827320, 49784150, 79654640, 99568300, 199136600, 398273200]

約数ペア:

[(1, 398273200), (2, 199136600), (4, 99568300), (5, 79654640), (8, 49784150), (10, 39827320), (13, 30636400), (16, 24892075), (20, 19913660), (25, 15930928), (26, 15318200), (40, 9956830), (50, 7965464), (52, 7659100), (65, 6127280), (80, 4978415), (100, 3982732), (104, 3829550), (130, 3063640), (191, 2085200), (200, 1991366), (208, 1914775), (260, 1531820), (325, 1225456), (382, 1042600), (400, 995683), (401, 993200), (520, 765910), (650, 612728), (764, 521300), (802, 496600), (955, 417040), (1040, 382955), (1300, 306364), (1528, 260650), (1604, 248300), (1910, 208520), (2005, 198640), (2483, 160400), (2600, 153182), (3056, 130325), (3208, 124150), (3820, 104260), (4010, 99320), (4775, 83408), (4966, 80200), (5200, 76591), (5213, 76400), (6416, 62075), (7640, 52130), (8020, 49660), (9550, 41704), (9932, 40100), (10025, 39728), (10426, 38200), (12415, 32080), (15280, 26065), (16040, 24830), (19100, 20852), (19864, 20050)]