21491154

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:152

約数の個数: 72

約数和(自身を含む): 50811852

約数和(自身を除く): 29320698

約数列:

[1, 2, 3, 6, 9, 18, 23, 37, 46, 61, 69, 74, 111, 122, 138, 183, 207, 222, 333, 366, 414, 529, 549, 666, 851, 1058, 1098, 1403, 1587, 1702, 2257, 2553, 2806, 3174, 4209, 4514, 4761, 5106, 6771, 7659, 8418, 9522, 12627, 13542, 15318, 19573, 20313, 25254, 32269, 39146, 40626, 51911, 58719, 64538, 96807, 103822, 117438, 155733, 176157, 193614, 290421, 311466, 352314, 467199, 580842, 934398, 1193953, 2387906, 3581859, 7163718, 10745577, 21491154]

約数ペア:

[(1, 21491154), (2, 10745577), (3, 7163718), (6, 3581859), (9, 2387906), (18, 1193953), (23, 934398), (37, 580842), (46, 467199), (61, 352314), (69, 311466), (74, 290421), (111, 193614), (122, 176157), (138, 155733), (183, 117438), (207, 103822), (222, 96807), (333, 64538), (366, 58719), (414, 51911), (529, 40626), (549, 39146), (666, 32269), (851, 25254), (1058, 20313), (1098, 19573), (1403, 15318), (1587, 13542), (1702, 12627), (2257, 9522), (2553, 8418), (2806, 7659), (3174, 6771), (4209, 5106), (4514, 4761)]