400900920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{12899}}^1$

素因数の和:12957

約数の個数: 128

約数和(自身を含む): 1411776000

約数和(自身を除く): 1010875080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 56, 60, 70, 74, 84, 105, 111, 120, 140, 148, 168, 185, 210, 222, 259, 280, 296, 370, 420, 444, 518, 555, 740, 777, 840, 888, 1036, 1110, 1295, 1480, 1554, 2072, 2220, 2590, 3108, 3885, 4440, 5180, 6216, 7770, 10360, 12899, 15540, 25798, 31080, 38697, 51596, 64495, 77394, 90293, 103192, 128990, 154788, 180586, 193485, 257980, 270879, 309576, 361172, 386970, 451465, 477263, 515960, 541758, 722344, 773940, 902930, 954526, 1083516, 1354395, 1431789, 1547880, 1805860, 1909052, 2167032, 2386315, 2708790, 2863578, 3340841, 3611720, 3818104, 4772630, 5417580, 5727156, 6681682, 7158945, 9545260, 10022523, 10835160, 11454312, 13363364, 14317890, 16704205, 19090520, 20045046, 26726728, 28635780, 33408410, 40090092, 50112615, 57271560, 66816820, 80180184, 100225230, 133633640, 200450460, 400900920]

約数ペア:

[(1, 400900920), (2, 200450460), (3, 133633640), (4, 100225230), (5, 80180184), (6, 66816820), (7, 57271560), (8, 50112615), (10, 40090092), (12, 33408410), (14, 28635780), (15, 26726728), (20, 20045046), (21, 19090520), (24, 16704205), (28, 14317890), (30, 13363364), (35, 11454312), (37, 10835160), (40, 10022523), (42, 9545260), (56, 7158945), (60, 6681682), (70, 5727156), (74, 5417580), (84, 4772630), (105, 3818104), (111, 3611720), (120, 3340841), (140, 2863578), (148, 2708790), (168, 2386315), (185, 2167032), (210, 1909052), (222, 1805860), (259, 1547880), (280, 1431789), (296, 1354395), (370, 1083516), (420, 954526), (444, 902930), (518, 773940), (555, 722344), (740, 541758), (777, 515960), (840, 477263), (888, 451465), (1036, 386970), (1110, 361172), (1295, 309576), (1480, 270879), (1554, 257980), (2072, 193485), (2220, 180586), (2590, 154788), (3108, 128990), (3885, 103192), (4440, 90293), (5180, 77394), (6216, 64495), (7770, 51596), (10360, 38697), (12899, 31080), (15540, 25798)]