18219877720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{678833}}^1$

素因数の和:678916

約数の個数: 64

約数和(自身を含む): 45454724640

約数和(自身を除く): 27234846920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 1220, 1342, 2440, 2684, 3355, 5368, 6710, 13420, 26840, 678833, 1357666, 2715332, 3394165, 5430664, 6788330, 7467163, 13576660, 14934326, 27153320, 29868652, 37335815, 41408813, 59737304, 74671630, 82817626, 149343260, 165635252, 207044065, 298686520, 331270504, 414088130, 455496943, 828176260, 910993886, 1656352520, 1821987772, 2277484715, 3643975544, 4554969430, 9109938860, 18219877720]

約数ペア:

[(1, 18219877720), (2, 9109938860), (4, 4554969430), (5, 3643975544), (8, 2277484715), (10, 1821987772), (11, 1656352520), (20, 910993886), (22, 828176260), (40, 455496943), (44, 414088130), (55, 331270504), (61, 298686520), (88, 207044065), (110, 165635252), (122, 149343260), (220, 82817626), (244, 74671630), (305, 59737304), (440, 41408813), (488, 37335815), (610, 29868652), (671, 27153320), (1220, 14934326), (1342, 13576660), (2440, 7467163), (2684, 6788330), (3355, 5430664), (5368, 3394165), (6710, 2715332), (13420, 1357666), (26840, 678833)]