19981958880

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3202237}}^1$

素因数の和:3202268

約数の個数: 96

約数和(自身を含む): 67784973984

約数和(自身を除く): 47803015104

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 78, 80, 96, 104, 120, 130, 156, 160, 195, 208, 240, 260, 312, 390, 416, 480, 520, 624, 780, 1040, 1248, 1560, 2080, 3120, 6240, 3202237, 6404474, 9606711, 12808948, 16011185, 19213422, 25617896, 32022370, 38426844, 41629081, 48033555, 51235792, 64044740, 76853688, 83258162, 96067110, 102471584, 124887243, 128089480, 153707376, 166516324, 192134220, 208145405, 249774486, 256178960, 307414752, 333032648, 384268440, 416290810, 499548972, 512357920, 624436215, 666065296, 768536880, 832581620, 999097944, 1248872430, 1332130592, 1537073760, 1665163240, 1998195888, 2497744860, 3330326480, 3996391776, 4995489720, 6660652960, 9990979440, 19981958880]

約数ペア:

[(1, 19981958880), (2, 9990979440), (3, 6660652960), (4, 4995489720), (5, 3996391776), (6, 3330326480), (8, 2497744860), (10, 1998195888), (12, 1665163240), (13, 1537073760), (15, 1332130592), (16, 1248872430), (20, 999097944), (24, 832581620), (26, 768536880), (30, 666065296), (32, 624436215), (39, 512357920), (40, 499548972), (48, 416290810), (52, 384268440), (60, 333032648), (65, 307414752), (78, 256178960), (80, 249774486), (96, 208145405), (104, 192134220), (120, 166516324), (130, 153707376), (156, 128089480), (160, 124887243), (195, 102471584), (208, 96067110), (240, 83258162), (260, 76853688), (312, 64044740), (390, 51235792), (416, 48033555), (480, 41629081), (520, 38426844), (624, 32022370), (780, 25617896), (1040, 19213422), (1248, 16011185), (1560, 12808948), (2080, 9606711), (3120, 6404474), (6240, 3202237)]