188978840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{829}}^1$

素因数の和:1020

約数の個数: 64

約数和(自身を含む): 439236000

約数和(自身を除く): 250257160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 139, 164, 205, 278, 328, 410, 556, 695, 820, 829, 1112, 1390, 1640, 1658, 2780, 3316, 4145, 5560, 5699, 6632, 8290, 11398, 16580, 22796, 28495, 33160, 33989, 45592, 56990, 67978, 113980, 115231, 135956, 169945, 227960, 230462, 271912, 339890, 460924, 576155, 679780, 921848, 1152310, 1359560, 2304620, 4609240, 4724471, 9448942, 18897884, 23622355, 37795768, 47244710, 94489420, 188978840]

約数ペア:

[(1, 188978840), (2, 94489420), (4, 47244710), (5, 37795768), (8, 23622355), (10, 18897884), (20, 9448942), (40, 4724471), (41, 4609240), (82, 2304620), (139, 1359560), (164, 1152310), (205, 921848), (278, 679780), (328, 576155), (410, 460924), (556, 339890), (695, 271912), (820, 230462), (829, 227960), (1112, 169945), (1390, 135956), (1640, 115231), (1658, 113980), (2780, 67978), (3316, 56990), (4145, 45592), (5560, 33989), (5699, 33160), (6632, 28495), (8290, 22796), (11398, 16580)]