18997160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1$

素因数の和:355

約数の個数: 128

約数和(自身を含む): 55883520

約数和(自身を除く): 36886360

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 17, 20, 26, 28, 34, 35, 40, 52, 56, 65, 68, 70, 85, 91, 104, 119, 130, 136, 140, 170, 182, 221, 238, 260, 280, 307, 340, 364, 442, 455, 476, 520, 595, 614, 680, 728, 884, 910, 952, 1105, 1190, 1228, 1535, 1547, 1768, 1820, 2149, 2210, 2380, 2456, 3070, 3094, 3640, 3991, 4298, 4420, 4760, 5219, 6140, 6188, 7735, 7982, 8596, 8840, 10438, 10745, 12280, 12376, 15470, 15964, 17192, 19955, 20876, 21490, 26095, 27937, 30940, 31928, 36533, 39910, 41752, 42980, 52190, 55874, 61880, 67847, 73066, 79820, 85960, 104380, 111748, 135694, 139685, 146132, 159640, 182665, 208760, 223496, 271388, 279370, 292264, 339235, 365330, 474929, 542776, 558740, 678470, 730660, 949858, 1117480, 1356940, 1461320, 1899716, 2374645, 2713880, 3799432, 4749290, 9498580, 18997160]

約数ペア:

[(1, 18997160), (2, 9498580), (4, 4749290), (5, 3799432), (7, 2713880), (8, 2374645), (10, 1899716), (13, 1461320), (14, 1356940), (17, 1117480), (20, 949858), (26, 730660), (28, 678470), (34, 558740), (35, 542776), (40, 474929), (52, 365330), (56, 339235), (65, 292264), (68, 279370), (70, 271388), (85, 223496), (91, 208760), (104, 182665), (119, 159640), (130, 146132), (136, 139685), (140, 135694), (170, 111748), (182, 104380), (221, 85960), (238, 79820), (260, 73066), (280, 67847), (307, 61880), (340, 55874), (364, 52190), (442, 42980), (455, 41752), (476, 39910), (520, 36533), (595, 31928), (614, 30940), (680, 27937), (728, 26095), (884, 21490), (910, 20876), (952, 19955), (1105, 17192), (1190, 15964), (1228, 15470), (1535, 12376), (1547, 12280), (1768, 10745), (1820, 10438), (2149, 8840), (2210, 8596), (2380, 7982), (2456, 7735), (3070, 6188), (3094, 6140), (3640, 5219), (3991, 4760), (4298, 4420)]