21120736

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7253}}^1$

素因数の和:7283

約数の個数: 48

約数和(自身を含む): 51184224

約数和(自身を除く): 30063488

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7253, 14506, 29012, 50771, 58024, 94289, 101542, 116048, 188578, 203084, 232096, 377156, 406168, 660023, 754312, 812336, 1320046, 1508624, 1624672, 2640092, 3017248, 5280184, 10560368, 21120736]

約数ペア:

[(1, 21120736), (2, 10560368), (4, 5280184), (7, 3017248), (8, 2640092), (13, 1624672), (14, 1508624), (16, 1320046), (26, 812336), (28, 754312), (32, 660023), (52, 406168), (56, 377156), (91, 232096), (104, 203084), (112, 188578), (182, 116048), (208, 101542), (224, 94289), (364, 58024), (416, 50771), (728, 29012), (1456, 14506), (2912, 7253)]