128721840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41257}}^1$

素因数の和:41286

約数の個数: 80

約数和(自身を含む): 429743328

約数和(自身を除く): 301021488

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 41257, 82514, 123771, 165028, 206285, 247542, 330056, 412570, 495084, 536341, 618855, 660112, 825140, 990168, 1072682, 1237710, 1609023, 1650280, 1980336, 2145364, 2475420, 2681705, 3218046, 3300560, 4290728, 4950840, 5363410, 6436092, 8045115, 8581456, 9901680, 10726820, 12872184, 16090230, 21453640, 25744368, 32180460, 42907280, 64360920, 128721840]

約数ペア:

[(1, 128721840), (2, 64360920), (3, 42907280), (4, 32180460), (5, 25744368), (6, 21453640), (8, 16090230), (10, 12872184), (12, 10726820), (13, 9901680), (15, 8581456), (16, 8045115), (20, 6436092), (24, 5363410), (26, 4950840), (30, 4290728), (39, 3300560), (40, 3218046), (48, 2681705), (52, 2475420), (60, 2145364), (65, 1980336), (78, 1650280), (80, 1609023), (104, 1237710), (120, 1072682), (130, 990168), (156, 825140), (195, 660112), (208, 618855), (240, 536341), (260, 495084), (312, 412570), (390, 330056), (520, 247542), (624, 206285), (780, 165028), (1040, 123771), (1560, 82514), (3120, 41257)]