21440740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3319}}^1$

素因数の和:3364

約数の個数: 48

約数和(自身を含む): 50198400

約数和(自身を除く): 28757660

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 3319, 6460, 6638, 13276, 16595, 33190, 56423, 63061, 66380, 112846, 126122, 225692, 252244, 282115, 315305, 564230, 630610, 1072037, 1128460, 1261220, 2144074, 4288148, 5360185, 10720370, 21440740]

約数ペア:

[(1, 21440740), (2, 10720370), (4, 5360185), (5, 4288148), (10, 2144074), (17, 1261220), (19, 1128460), (20, 1072037), (34, 630610), (38, 564230), (68, 315305), (76, 282115), (85, 252244), (95, 225692), (170, 126122), (190, 112846), (323, 66380), (340, 63061), (380, 56423), (646, 33190), (1292, 16595), (1615, 13276), (3230, 6638), (3319, 6460)]