21485790

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:215

約数の個数: 128

約数和(自身を含む): 63037440

約数和(自身を除く): 41551650

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 27, 30, 31, 34, 45, 51, 54, 62, 85, 90, 93, 102, 135, 151, 153, 155, 170, 186, 255, 270, 279, 302, 306, 310, 453, 459, 465, 510, 527, 558, 755, 765, 837, 906, 918, 930, 1054, 1359, 1395, 1510, 1530, 1581, 1674, 2265, 2295, 2567, 2635, 2718, 2790, 3162, 4077, 4185, 4530, 4590, 4681, 4743, 5134, 5270, 6795, 7701, 7905, 8154, 8370, 9362, 9486, 12835, 13590, 14043, 14229, 15402, 15810, 20385, 23103, 23405, 23715, 25670, 28086, 28458, 38505, 40770, 42129, 46206, 46810, 47430, 69309, 70215, 71145, 77010, 79577, 84258, 115515, 126387, 138618, 140430, 142290, 159154, 210645, 231030, 238731, 252774, 346545, 397885, 421290, 477462, 631935, 693090, 716193, 795770, 1193655, 1263870, 1432386, 2148579, 2387310, 3580965, 4297158, 7161930, 10742895, 21485790]

約数ペア:

[(1, 21485790), (2, 10742895), (3, 7161930), (5, 4297158), (6, 3580965), (9, 2387310), (10, 2148579), (15, 1432386), (17, 1263870), (18, 1193655), (27, 795770), (30, 716193), (31, 693090), (34, 631935), (45, 477462), (51, 421290), (54, 397885), (62, 346545), (85, 252774), (90, 238731), (93, 231030), (102, 210645), (135, 159154), (151, 142290), (153, 140430), (155, 138618), (170, 126387), (186, 115515), (255, 84258), (270, 79577), (279, 77010), (302, 71145), (306, 70215), (310, 69309), (453, 47430), (459, 46810), (465, 46206), (510, 42129), (527, 40770), (558, 38505), (755, 28458), (765, 28086), (837, 25670), (906, 23715), (918, 23405), (930, 23103), (1054, 20385), (1359, 15810), (1395, 15402), (1510, 14229), (1530, 14043), (1581, 13590), (1674, 12835), (2265, 9486), (2295, 9362), (2567, 8370), (2635, 8154), (2718, 7905), (2790, 7701), (3162, 6795), (4077, 5270), (4185, 5134), (4530, 4743), (4590, 4681)]