642502900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:314

約数の個数: 144

約数和(自身を含む): 1574899200

約数和(自身を除く): 932396300

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 107, 124, 130, 149, 155, 214, 260, 298, 310, 325, 403, 428, 535, 596, 620, 650, 745, 775, 806, 1070, 1300, 1391, 1490, 1550, 1612, 1937, 2015, 2140, 2675, 2782, 2980, 3100, 3317, 3725, 3874, 4030, 4619, 5350, 5564, 6634, 6955, 7450, 7748, 8060, 9238, 9685, 10075, 10700, 13268, 13910, 14900, 15943, 16585, 18476, 19370, 20150, 23095, 27820, 31886, 33170, 34775, 38740, 40300, 43121, 46190, 48425, 60047, 63772, 66340, 69550, 79715, 82925, 86242, 92380, 96850, 115475, 120094, 139100, 159430, 165850, 172484, 193700, 207259, 215605, 230950, 240188, 300235, 318860, 331700, 398575, 414518, 431210, 461900, 494233, 600470, 797150, 829036, 862420, 988466, 1036295, 1078025, 1200940, 1501175, 1594300, 1976932, 2072590, 2156050, 2471165, 3002350, 4145180, 4312100, 4942330, 5181475, 6004700, 6425029, 9884660, 10362950, 12355825, 12850058, 20725900, 24711650, 25700116, 32125145, 49423300, 64250290, 128500580, 160625725, 321251450, 642502900]

約数ペア:

[(1, 642502900), (2, 321251450), (4, 160625725), (5, 128500580), (10, 64250290), (13, 49423300), (20, 32125145), (25, 25700116), (26, 24711650), (31, 20725900), (50, 12850058), (52, 12355825), (62, 10362950), (65, 9884660), (100, 6425029), (107, 6004700), (124, 5181475), (130, 4942330), (149, 4312100), (155, 4145180), (214, 3002350), (260, 2471165), (298, 2156050), (310, 2072590), (325, 1976932), (403, 1594300), (428, 1501175), (535, 1200940), (596, 1078025), (620, 1036295), (650, 988466), (745, 862420), (775, 829036), (806, 797150), (1070, 600470), (1300, 494233), (1391, 461900), (1490, 431210), (1550, 414518), (1612, 398575), (1937, 331700), (2015, 318860), (2140, 300235), (2675, 240188), (2782, 230950), (2980, 215605), (3100, 207259), (3317, 193700), (3725, 172484), (3874, 165850), (4030, 159430), (4619, 139100), (5350, 120094), (5564, 115475), (6634, 96850), (6955, 92380), (7450, 86242), (7748, 82925), (8060, 79715), (9238, 69550), (9685, 66340), (10075, 63772), (10700, 60047), (13268, 48425), (13910, 46190), (14900, 43121), (15943, 40300), (16585, 38740), (18476, 34775), (19370, 33170), (20150, 31886), (23095, 27820)]