1280878920

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20807}}^1$

素因数の和:20849

約数の個数: 160

約数和(自身を含む): 4531982400

約数和(自身を除く): 3251103480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 81, 90, 95, 108, 114, 120, 135, 152, 162, 171, 180, 190, 216, 228, 270, 285, 324, 342, 360, 380, 405, 456, 513, 540, 570, 648, 684, 760, 810, 855, 1026, 1080, 1140, 1368, 1539, 1620, 1710, 2052, 2280, 2565, 3078, 3240, 3420, 4104, 5130, 6156, 6840, 7695, 10260, 12312, 15390, 20520, 20807, 30780, 41614, 61560, 62421, 83228, 104035, 124842, 166456, 187263, 208070, 249684, 312105, 374526, 395333, 416140, 499368, 561789, 624210, 749052, 790666, 832280, 936315, 1123578, 1185999, 1248420, 1498104, 1581332, 1685367, 1872630, 1976665, 2247156, 2371998, 2496840, 2808945, 3162664, 3370734, 3557997, 3745260, 3953330, 4494312, 4743996, 5617890, 5929995, 6741468, 7115994, 7490520, 7906660, 8426835, 9487992, 10673991, 11235780, 11859990, 13482936, 14231988, 15813320, 16853670, 17789985, 21347982, 22471560, 23719980, 28463976, 32021973, 33707340, 35579970, 42695964, 47439960, 53369955, 64043946, 67414680, 71159940, 85391928, 106739910, 128087892, 142319880, 160109865, 213479820, 256175784, 320219730, 426959640, 640439460, 1280878920]

約数ペア:

[(1, 1280878920), (2, 640439460), (3, 426959640), (4, 320219730), (5, 256175784), (6, 213479820), (8, 160109865), (9, 142319880), (10, 128087892), (12, 106739910), (15, 85391928), (18, 71159940), (19, 67414680), (20, 64043946), (24, 53369955), (27, 47439960), (30, 42695964), (36, 35579970), (38, 33707340), (40, 32021973), (45, 28463976), (54, 23719980), (57, 22471560), (60, 21347982), (72, 17789985), (76, 16853670), (81, 15813320), (90, 14231988), (95, 13482936), (108, 11859990), (114, 11235780), (120, 10673991), (135, 9487992), (152, 8426835), (162, 7906660), (171, 7490520), (180, 7115994), (190, 6741468), (216, 5929995), (228, 5617890), (270, 4743996), (285, 4494312), (324, 3953330), (342, 3745260), (360, 3557997), (380, 3370734), (405, 3162664), (456, 2808945), (513, 2496840), (540, 2371998), (570, 2247156), (648, 1976665), (684, 1872630), (760, 1685367), (810, 1581332), (855, 1498104), (1026, 1248420), (1080, 1185999), (1140, 1123578), (1368, 936315), (1539, 832280), (1620, 790666), (1710, 749052), (2052, 624210), (2280, 561789), (2565, 499368), (3078, 416140), (3240, 395333), (3420, 374526), (4104, 312105), (5130, 249684), (6156, 208070), (6840, 187263), (7695, 166456), (10260, 124842), (12312, 104035), (15390, 83228), (20520, 62421), (20807, 61560), (30780, 41614)]