20281990680

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2682803}}^1$

素因数の和:2682830

約数の個数: 128

約数和(自身を含む): 77264755200

約数和(自身を除く): 56982764520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 3780, 7560, 2682803, 5365606, 8048409, 10731212, 13414015, 16096818, 18779621, 21462424, 24145227, 26828030, 32193636, 37559242, 40242045, 48290454, 53656060, 56338863, 64387272, 72435681, 75118484, 80484090, 93898105, 96580908, 107312120, 112677726, 120726135, 144871362, 150236968, 160968180, 169016589, 187796210, 193161816, 225355452, 241452270, 281694315, 289742724, 321936360, 338033178, 362178405, 375592420, 450710904, 482904540, 507049767, 563388630, 579485448, 676066356, 724356810, 751184840, 845082945, 965809080, 1014099534, 1126777260, 1352132712, 1448713620, 1690165890, 2028199068, 2253554520, 2535248835, 2897427240, 3380331780, 4056398136, 5070497670, 6760663560, 10140995340, 20281990680]

約数ペア:

[(1, 20281990680), (2, 10140995340), (3, 6760663560), (4, 5070497670), (5, 4056398136), (6, 3380331780), (7, 2897427240), (8, 2535248835), (9, 2253554520), (10, 2028199068), (12, 1690165890), (14, 1448713620), (15, 1352132712), (18, 1126777260), (20, 1014099534), (21, 965809080), (24, 845082945), (27, 751184840), (28, 724356810), (30, 676066356), (35, 579485448), (36, 563388630), (40, 507049767), (42, 482904540), (45, 450710904), (54, 375592420), (56, 362178405), (60, 338033178), (63, 321936360), (70, 289742724), (72, 281694315), (84, 241452270), (90, 225355452), (105, 193161816), (108, 187796210), (120, 169016589), (126, 160968180), (135, 150236968), (140, 144871362), (168, 120726135), (180, 112677726), (189, 107312120), (210, 96580908), (216, 93898105), (252, 80484090), (270, 75118484), (280, 72435681), (315, 64387272), (360, 56338863), (378, 53656060), (420, 48290454), (504, 40242045), (540, 37559242), (630, 32193636), (756, 26828030), (840, 24145227), (945, 21462424), (1080, 18779621), (1260, 16096818), (1512, 13414015), (1890, 10731212), (2520, 8048409), (3780, 5365606), (7560, 2682803)]