21123344620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{417953}}^1$

素因数の和:418007

約数の個数: 72

約数和(自身を含む): 53504799264

約数和(自身を除く): 32381454644

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 361, 380, 532, 665, 722, 1330, 1444, 1805, 2527, 2660, 3610, 5054, 7220, 10108, 12635, 25270, 50540, 417953, 835906, 1671812, 2089765, 2925671, 4179530, 5851342, 7941107, 8359060, 11702684, 14628355, 15882214, 29256710, 31764428, 39705535, 55587749, 58513420, 79411070, 111175498, 150881033, 158822140, 222350996, 277938745, 301762066, 555877490, 603524132, 754405165, 1056167231, 1111754980, 1508810330, 2112334462, 3017620660, 4224668924, 5280836155, 10561672310, 21123344620]

約数ペア:

[(1, 21123344620), (2, 10561672310), (4, 5280836155), (5, 4224668924), (7, 3017620660), (10, 2112334462), (14, 1508810330), (19, 1111754980), (20, 1056167231), (28, 754405165), (35, 603524132), (38, 555877490), (70, 301762066), (76, 277938745), (95, 222350996), (133, 158822140), (140, 150881033), (190, 111175498), (266, 79411070), (361, 58513420), (380, 55587749), (532, 39705535), (665, 31764428), (722, 29256710), (1330, 15882214), (1444, 14628355), (1805, 11702684), (2527, 8359060), (2660, 7941107), (3610, 5851342), (5054, 4179530), (7220, 2925671), (10108, 2089765), (12635, 1671812), (25270, 835906), (50540, 417953)]