209905360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1$

素因数の和:465

約数の個数: 160

約数和(自身を含む): 597104640

約数和(自身を除く): 387199280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 43, 46, 56, 70, 80, 86, 92, 112, 115, 140, 161, 172, 184, 215, 230, 280, 301, 322, 344, 368, 379, 430, 460, 560, 602, 644, 688, 758, 805, 860, 920, 989, 1204, 1288, 1505, 1516, 1610, 1720, 1840, 1895, 1978, 2408, 2576, 2653, 3010, 3032, 3220, 3440, 3790, 3956, 4816, 4945, 5306, 6020, 6064, 6440, 6923, 7580, 7912, 8717, 9890, 10612, 12040, 12880, 13265, 13846, 15160, 15824, 16297, 17434, 19780, 21224, 24080, 26530, 27692, 30320, 32594, 34615, 34868, 39560, 42448, 43585, 53060, 55384, 61019, 65188, 69230, 69736, 79120, 81485, 87170, 106120, 110768, 114079, 122038, 130376, 138460, 139472, 162970, 174340, 212240, 228158, 244076, 260752, 276920, 305095, 325940, 348680, 374831, 456316, 488152, 553840, 570395, 610190, 651880, 697360, 749662, 912632, 976304, 1140790, 1220380, 1303760, 1499324, 1825264, 1874155, 2281580, 2440760, 2623817, 2998648, 3748310, 4563160, 4881520, 5247634, 5997296, 7496620, 9126320, 10495268, 13119085, 14993240, 20990536, 26238170, 29986480, 41981072, 52476340, 104952680, 209905360]

約数ペア:

[(1, 209905360), (2, 104952680), (4, 52476340), (5, 41981072), (7, 29986480), (8, 26238170), (10, 20990536), (14, 14993240), (16, 13119085), (20, 10495268), (23, 9126320), (28, 7496620), (35, 5997296), (40, 5247634), (43, 4881520), (46, 4563160), (56, 3748310), (70, 2998648), (80, 2623817), (86, 2440760), (92, 2281580), (112, 1874155), (115, 1825264), (140, 1499324), (161, 1303760), (172, 1220380), (184, 1140790), (215, 976304), (230, 912632), (280, 749662), (301, 697360), (322, 651880), (344, 610190), (368, 570395), (379, 553840), (430, 488152), (460, 456316), (560, 374831), (602, 348680), (644, 325940), (688, 305095), (758, 276920), (805, 260752), (860, 244076), (920, 228158), (989, 212240), (1204, 174340), (1288, 162970), (1505, 139472), (1516, 138460), (1610, 130376), (1720, 122038), (1840, 114079), (1895, 110768), (1978, 106120), (2408, 87170), (2576, 81485), (2653, 79120), (3010, 69736), (3032, 69230), (3220, 65188), (3440, 61019), (3790, 55384), (3956, 53060), (4816, 43585), (4945, 42448), (5306, 39560), (6020, 34868), (6064, 34615), (6440, 32594), (6923, 30320), (7580, 27692), (7912, 26530), (8717, 24080), (9890, 21224), (10612, 19780), (12040, 17434), (12880, 16297), (13265, 15824), (13846, 15160)]