122148940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1\times {\mathrm{421}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 261606240

約数和(自身を除く): 139457300

約数列:

[1, 2, 4, 5, 10, 20, 89, 163, 178, 326, 356, 421, 445, 652, 815, 842, 890, 1630, 1684, 1780, 2105, 3260, 4210, 8420, 14507, 29014, 37469, 58028, 68623, 72535, 74938, 137246, 145070, 149876, 187345, 274492, 290140, 343115, 374690, 686230, 749380, 1372460, 6107447, 12214894, 24429788, 30537235, 61074470, 122148940]

約数ペア:

[(1, 122148940), (2, 61074470), (4, 30537235), (5, 24429788), (10, 12214894), (20, 6107447), (89, 1372460), (163, 749380), (178, 686230), (326, 374690), (356, 343115), (421, 290140), (445, 274492), (652, 187345), (815, 149876), (842, 145070), (890, 137246), (1630, 74938), (1684, 72535), (1780, 68623), (2105, 58028), (3260, 37469), (4210, 29014), (8420, 14507)]