123721000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:372

約数の個数: 128

約数和(自身を含む): 322882560

約数和(自身を除く): 199161560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 31, 40, 50, 52, 62, 65, 100, 104, 124, 125, 130, 155, 200, 248, 250, 260, 307, 310, 325, 403, 500, 520, 614, 620, 650, 775, 806, 1000, 1228, 1240, 1300, 1535, 1550, 1612, 1625, 2015, 2456, 2600, 3070, 3100, 3224, 3250, 3875, 3991, 4030, 6140, 6200, 6500, 7675, 7750, 7982, 8060, 9517, 10075, 12280, 13000, 15350, 15500, 15964, 16120, 19034, 19955, 20150, 30700, 31000, 31928, 38068, 38375, 39910, 40300, 47585, 50375, 61400, 76136, 76750, 79820, 80600, 95170, 99775, 100750, 123721, 153500, 159640, 190340, 199550, 201500, 237925, 247442, 307000, 380680, 399100, 403000, 475850, 494884, 498875, 618605, 798200, 951700, 989768, 997750, 1189625, 1237210, 1903400, 1995500, 2379250, 2474420, 3093025, 3991000, 4758500, 4948840, 6186050, 9517000, 12372100, 15465125, 24744200, 30930250, 61860500, 123721000]

約数ペア:

[(1, 123721000), (2, 61860500), (4, 30930250), (5, 24744200), (8, 15465125), (10, 12372100), (13, 9517000), (20, 6186050), (25, 4948840), (26, 4758500), (31, 3991000), (40, 3093025), (50, 2474420), (52, 2379250), (62, 1995500), (65, 1903400), (100, 1237210), (104, 1189625), (124, 997750), (125, 989768), (130, 951700), (155, 798200), (200, 618605), (248, 498875), (250, 494884), (260, 475850), (307, 403000), (310, 399100), (325, 380680), (403, 307000), (500, 247442), (520, 237925), (614, 201500), (620, 199550), (650, 190340), (775, 159640), (806, 153500), (1000, 123721), (1228, 100750), (1240, 99775), (1300, 95170), (1535, 80600), (1550, 79820), (1612, 76750), (1625, 76136), (2015, 61400), (2456, 50375), (2600, 47585), (3070, 40300), (3100, 39910), (3224, 38375), (3250, 38068), (3875, 31928), (3991, 31000), (4030, 30700), (6140, 20150), (6200, 19955), (6500, 19034), (7675, 16120), (7750, 15964), (7982, 15500), (8060, 15350), (9517, 13000), (10075, 12280)]