19158984920

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{77743}}^1$

素因数の和:77916

約数の個数: 64

約数和(自身を含む): 44248775040

約数和(自身を除く): 25089790120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 101, 122, 202, 244, 305, 404, 488, 505, 610, 808, 1010, 1220, 2020, 2440, 4040, 6161, 12322, 24644, 30805, 49288, 61610, 77743, 123220, 155486, 246440, 310972, 388715, 621944, 777430, 1554860, 3109720, 4742323, 7852043, 9484646, 15704086, 18969292, 23711615, 31408172, 37938584, 39260215, 47423230, 62816344, 78520430, 94846460, 157040860, 189692920, 314081720, 478974623, 957949246, 1915898492, 2394873115, 3831796984, 4789746230, 9579492460, 19158984920]

約数ペア:

[(1, 19158984920), (2, 9579492460), (4, 4789746230), (5, 3831796984), (8, 2394873115), (10, 1915898492), (20, 957949246), (40, 478974623), (61, 314081720), (101, 189692920), (122, 157040860), (202, 94846460), (244, 78520430), (305, 62816344), (404, 47423230), (488, 39260215), (505, 37938584), (610, 31408172), (808, 23711615), (1010, 18969292), (1220, 15704086), (2020, 9484646), (2440, 7852043), (4040, 4742323), (6161, 3109720), (12322, 1554860), (24644, 777430), (30805, 621944), (49288, 388715), (61610, 310972), (77743, 246440), (123220, 155486)]