21500700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:216

約数の個数: 144

約数和(自身を含む): 69266400

約数和(自身を除く): 47765700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 37, 39, 50, 52, 60, 65, 74, 75, 78, 100, 111, 130, 148, 149, 150, 156, 185, 195, 222, 260, 298, 300, 325, 370, 390, 444, 447, 481, 555, 596, 650, 740, 745, 780, 894, 925, 962, 975, 1110, 1300, 1443, 1490, 1788, 1850, 1924, 1937, 1950, 2220, 2235, 2405, 2775, 2886, 2980, 3700, 3725, 3874, 3900, 4470, 4810, 5513, 5550, 5772, 5811, 7215, 7450, 7748, 8940, 9620, 9685, 11026, 11100, 11175, 11622, 12025, 14430, 14900, 16539, 19370, 22052, 22350, 23244, 24050, 27565, 28860, 29055, 33078, 36075, 38740, 44700, 48100, 48425, 55130, 58110, 66156, 71669, 72150, 82695, 96850, 110260, 116220, 137825, 143338, 144300, 145275, 165390, 193700, 215007, 275650, 286676, 290550, 330780, 358345, 413475, 430014, 551300, 581100, 716690, 826950, 860028, 1075035, 1433380, 1653900, 1791725, 2150070, 3583450, 4300140, 5375175, 7166900, 10750350, 21500700]

約数ペア:

[(1, 21500700), (2, 10750350), (3, 7166900), (4, 5375175), (5, 4300140), (6, 3583450), (10, 2150070), (12, 1791725), (13, 1653900), (15, 1433380), (20, 1075035), (25, 860028), (26, 826950), (30, 716690), (37, 581100), (39, 551300), (50, 430014), (52, 413475), (60, 358345), (65, 330780), (74, 290550), (75, 286676), (78, 275650), (100, 215007), (111, 193700), (130, 165390), (148, 145275), (149, 144300), (150, 143338), (156, 137825), (185, 116220), (195, 110260), (222, 96850), (260, 82695), (298, 72150), (300, 71669), (325, 66156), (370, 58110), (390, 55130), (444, 48425), (447, 48100), (481, 44700), (555, 38740), (596, 36075), (650, 33078), (740, 29055), (745, 28860), (780, 27565), (894, 24050), (925, 23244), (962, 22350), (975, 22052), (1110, 19370), (1300, 16539), (1443, 14900), (1490, 14430), (1788, 12025), (1850, 11622), (1924, 11175), (1937, 11100), (1950, 11026), (2220, 9685), (2235, 9620), (2405, 8940), (2775, 7748), (2886, 7450), (2980, 7215), (3700, 5811), (3725, 5772), (3874, 5550), (3900, 5513), (4470, 4810)]