19929420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15817}}^1$

素因数の和:15839

約数の個数: 72

約数和(自身を含む): 69093024

約数和(自身を除く): 49163604

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 15817, 31634, 47451, 63268, 79085, 94902, 110719, 142353, 158170, 189804, 221438, 237255, 284706, 316340, 332157, 442876, 474510, 553595, 569412, 664314, 711765, 949020, 996471, 1107190, 1328628, 1423530, 1660785, 1992942, 2214380, 2847060, 3321570, 3985884, 4982355, 6643140, 9964710, 19929420]

約数ペア:

[(1, 19929420), (2, 9964710), (3, 6643140), (4, 4982355), (5, 3985884), (6, 3321570), (7, 2847060), (9, 2214380), (10, 1992942), (12, 1660785), (14, 1423530), (15, 1328628), (18, 1107190), (20, 996471), (21, 949020), (28, 711765), (30, 664314), (35, 569412), (36, 553595), (42, 474510), (45, 442876), (60, 332157), (63, 316340), (70, 284706), (84, 237255), (90, 221438), (105, 189804), (126, 158170), (140, 142353), (180, 110719), (210, 94902), (252, 79085), (315, 63268), (420, 47451), (630, 31634), (1260, 15817)]