21000984060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{253819}}^1$

素因数の和:254035

約数の個数: 96

約数和(自身を含む): 67544547840

約数和(自身を除く): 46543563780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 197, 210, 394, 420, 591, 788, 985, 1182, 1379, 1970, 2364, 2758, 2955, 3940, 4137, 5516, 5910, 6895, 8274, 11820, 13790, 16548, 20685, 27580, 41370, 82740, 253819, 507638, 761457, 1015276, 1269095, 1522914, 1776733, 2538190, 3045828, 3553466, 3807285, 5076380, 5330199, 7106932, 7614570, 8883665, 10660398, 15229140, 17767330, 21320796, 26650995, 35534660, 50002343, 53301990, 100004686, 106603980, 150007029, 200009372, 250011715, 300014058, 350016401, 500023430, 600028116, 700032802, 750035145, 1000046860, 1050049203, 1400065604, 1500070290, 1750082005, 2100098406, 3000140580, 3500164010, 4200196812, 5250246015, 7000328020, 10500492030, 21000984060]

約数ペア:

[(1, 21000984060), (2, 10500492030), (3, 7000328020), (4, 5250246015), (5, 4200196812), (6, 3500164010), (7, 3000140580), (10, 2100098406), (12, 1750082005), (14, 1500070290), (15, 1400065604), (20, 1050049203), (21, 1000046860), (28, 750035145), (30, 700032802), (35, 600028116), (42, 500023430), (60, 350016401), (70, 300014058), (84, 250011715), (105, 200009372), (140, 150007029), (197, 106603980), (210, 100004686), (394, 53301990), (420, 50002343), (591, 35534660), (788, 26650995), (985, 21320796), (1182, 17767330), (1379, 15229140), (1970, 10660398), (2364, 8883665), (2758, 7614570), (2955, 7106932), (3940, 5330199), (4137, 5076380), (5516, 3807285), (5910, 3553466), (6895, 3045828), (8274, 2538190), (11820, 1776733), (13790, 1522914), (16548, 1269095), (20685, 1015276), (27580, 761457), (41370, 507638), (82740, 253819)]