21349620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6977}}^1$

素因数の和:7009

約数の個数: 72

約数和(自身を含む): 68579784

約数和(自身を除く): 47230164

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6977, 13954, 20931, 27908, 34885, 41862, 62793, 69770, 83724, 104655, 118609, 125586, 139540, 209310, 237218, 251172, 313965, 355827, 418620, 474436, 593045, 627930, 711654, 1067481, 1186090, 1255860, 1423308, 1779135, 2134962, 2372180, 3558270, 4269924, 5337405, 7116540, 10674810, 21349620]

約数ペア:

[(1, 21349620), (2, 10674810), (3, 7116540), (4, 5337405), (5, 4269924), (6, 3558270), (9, 2372180), (10, 2134962), (12, 1779135), (15, 1423308), (17, 1255860), (18, 1186090), (20, 1067481), (30, 711654), (34, 627930), (36, 593045), (45, 474436), (51, 418620), (60, 355827), (68, 313965), (85, 251172), (90, 237218), (102, 209310), (153, 139540), (170, 125586), (180, 118609), (204, 104655), (255, 83724), (306, 69770), (340, 62793), (510, 41862), (612, 34885), (765, 27908), (1020, 20931), (1530, 13954), (3060, 6977)]