19870960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{769}}^1$

素因数の和:818

約数の個数: 80

約数和(自身を含む): 51559200

約数和(自身を除く): 31688240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 769, 1292, 1360, 1520, 1538, 1615, 2584, 3076, 3230, 3845, 5168, 6152, 6460, 7690, 12304, 12920, 13073, 14611, 15380, 25840, 26146, 29222, 30760, 52292, 58444, 61520, 65365, 73055, 104584, 116888, 130730, 146110, 209168, 233776, 248387, 261460, 292220, 496774, 522920, 584440, 993548, 1045840, 1168880, 1241935, 1987096, 2483870, 3974192, 4967740, 9935480, 19870960]

約数ペア:

[(1, 19870960), (2, 9935480), (4, 4967740), (5, 3974192), (8, 2483870), (10, 1987096), (16, 1241935), (17, 1168880), (19, 1045840), (20, 993548), (34, 584440), (38, 522920), (40, 496774), (68, 292220), (76, 261460), (80, 248387), (85, 233776), (95, 209168), (136, 146110), (152, 130730), (170, 116888), (190, 104584), (272, 73055), (304, 65365), (323, 61520), (340, 58444), (380, 52292), (646, 30760), (680, 29222), (760, 26146), (769, 25840), (1292, 15380), (1360, 14611), (1520, 13073), (1538, 12920), (1615, 12304), (2584, 7690), (3076, 6460), (3230, 6152), (3845, 5168)]