20606950

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{647}}^1$

素因数の和:686

約数の個数: 72

約数和(自身を含む): 48090672

約数和(自身を除く): 27483722

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 49, 50, 65, 70, 91, 98, 130, 175, 182, 245, 325, 350, 455, 490, 637, 647, 650, 910, 1225, 1274, 1294, 2275, 2450, 3185, 3235, 4529, 4550, 6370, 6470, 8411, 9058, 15925, 16175, 16822, 22645, 31703, 31850, 32350, 42055, 45290, 58877, 63406, 84110, 113225, 117754, 158515, 210275, 226450, 294385, 317030, 412139, 420550, 588770, 792575, 824278, 1471925, 1585150, 2060695, 2943850, 4121390, 10303475, 20606950]

約数ペア:

[(1, 20606950), (2, 10303475), (5, 4121390), (7, 2943850), (10, 2060695), (13, 1585150), (14, 1471925), (25, 824278), (26, 792575), (35, 588770), (49, 420550), (50, 412139), (65, 317030), (70, 294385), (91, 226450), (98, 210275), (130, 158515), (175, 117754), (182, 113225), (245, 84110), (325, 63406), (350, 58877), (455, 45290), (490, 42055), (637, 32350), (647, 31850), (650, 31703), (910, 22645), (1225, 16822), (1274, 16175), (1294, 15925), (2275, 9058), (2450, 8411), (3185, 6470), (3235, 6370), (4529, 4550)]