71393180

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{421}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 153844320

約数和(自身を除く): 82451140

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 139, 244, 278, 305, 421, 556, 610, 695, 842, 1220, 1390, 1684, 2105, 2780, 4210, 8420, 8479, 16958, 25681, 33916, 42395, 51362, 58519, 84790, 102724, 117038, 128405, 169580, 234076, 256810, 292595, 513620, 585190, 1170380, 3569659, 7139318, 14278636, 17848295, 35696590, 71393180]

約数ペア:

[(1, 71393180), (2, 35696590), (4, 17848295), (5, 14278636), (10, 7139318), (20, 3569659), (61, 1170380), (122, 585190), (139, 513620), (244, 292595), (278, 256810), (305, 234076), (421, 169580), (556, 128405), (610, 117038), (695, 102724), (842, 84790), (1220, 58519), (1390, 51362), (1684, 42395), (2105, 33916), (2780, 25681), (4210, 16958), (8420, 8479)]