1780234540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2557}}^1\times {\mathrm{4973}}^1$

素因数の和:7546

約数の個数: 48

約数和(自身を含む): 4275093312

約数和(自身を除く): 2494858772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2557, 4973, 5114, 9946, 10228, 12785, 17899, 19892, 24865, 25570, 34811, 35798, 49730, 51140, 69622, 71596, 89495, 99460, 139244, 174055, 178990, 348110, 357980, 696220, 12715961, 25431922, 50863844, 63579805, 89011727, 127159610, 178023454, 254319220, 356046908, 445058635, 890117270, 1780234540]

約数ペア:

[(1, 1780234540), (2, 890117270), (4, 445058635), (5, 356046908), (7, 254319220), (10, 178023454), (14, 127159610), (20, 89011727), (28, 63579805), (35, 50863844), (70, 25431922), (140, 12715961), (2557, 696220), (4973, 357980), (5114, 348110), (9946, 178990), (10228, 174055), (12785, 139244), (17899, 99460), (19892, 89495), (24865, 71596), (25570, 69622), (34811, 51140), (35798, 49730)]