28018620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{601}}^1$

素因数の和:660

約数の個数: 144

約数和(自身を含む): 99922368

約数和(自身を除く): 71903748

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 60, 63, 70, 74, 84, 90, 105, 111, 126, 140, 148, 180, 185, 210, 222, 252, 259, 315, 333, 370, 420, 444, 518, 555, 601, 630, 666, 740, 777, 1036, 1110, 1202, 1260, 1295, 1332, 1554, 1665, 1803, 2220, 2331, 2404, 2590, 3005, 3108, 3330, 3606, 3885, 4207, 4662, 5180, 5409, 6010, 6660, 7212, 7770, 8414, 9015, 9324, 10818, 11655, 12020, 12621, 15540, 16828, 18030, 21035, 21636, 22237, 23310, 25242, 27045, 36060, 37863, 42070, 44474, 46620, 50484, 54090, 63105, 66711, 75726, 84140, 88948, 108180, 111185, 126210, 133422, 151452, 155659, 189315, 200133, 222370, 252420, 266844, 311318, 333555, 378630, 400266, 444740, 466977, 622636, 667110, 757260, 778295, 800532, 933954, 1000665, 1334220, 1400931, 1556590, 1867908, 2001330, 2334885, 2801862, 3113180, 4002660, 4669770, 5603724, 7004655, 9339540, 14009310, 28018620]

約数ペア:

[(1, 28018620), (2, 14009310), (3, 9339540), (4, 7004655), (5, 5603724), (6, 4669770), (7, 4002660), (9, 3113180), (10, 2801862), (12, 2334885), (14, 2001330), (15, 1867908), (18, 1556590), (20, 1400931), (21, 1334220), (28, 1000665), (30, 933954), (35, 800532), (36, 778295), (37, 757260), (42, 667110), (45, 622636), (60, 466977), (63, 444740), (70, 400266), (74, 378630), (84, 333555), (90, 311318), (105, 266844), (111, 252420), (126, 222370), (140, 200133), (148, 189315), (180, 155659), (185, 151452), (210, 133422), (222, 126210), (252, 111185), (259, 108180), (315, 88948), (333, 84140), (370, 75726), (420, 66711), (444, 63105), (518, 54090), (555, 50484), (601, 46620), (630, 44474), (666, 42070), (740, 37863), (777, 36060), (1036, 27045), (1110, 25242), (1202, 23310), (1260, 22237), (1295, 21636), (1332, 21035), (1554, 18030), (1665, 16828), (1803, 15540), (2220, 12621), (2331, 12020), (2404, 11655), (2590, 10818), (3005, 9324), (3108, 9015), (3330, 8414), (3606, 7770), (3885, 7212), (4207, 6660), (4662, 6010), (5180, 5409)]