21635220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21211}}^1$

素因数の和:21240

約数の個数: 48

約数和(自身を含む): 64145088

約数和(自身を除く): 42509868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 21211, 42422, 63633, 84844, 106055, 127266, 212110, 254532, 318165, 360587, 424220, 636330, 721174, 1081761, 1272660, 1442348, 1802935, 2163522, 3605870, 4327044, 5408805, 7211740, 10817610, 21635220]

約数ペア:

[(1, 21635220), (2, 10817610), (3, 7211740), (4, 5408805), (5, 4327044), (6, 3605870), (10, 2163522), (12, 1802935), (15, 1442348), (17, 1272660), (20, 1081761), (30, 721174), (34, 636330), (51, 424220), (60, 360587), (68, 318165), (85, 254532), (102, 212110), (170, 127266), (204, 106055), (255, 84844), (340, 63633), (510, 42422), (1020, 21211)]