131681920

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3373}}^1$

素因数の和:3453

約数の個数: 64

約数和(自身を含む): 320057640

約数和(自身を除く): 188375720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 640, 976, 1220, 1952, 2440, 3373, 3904, 4880, 6746, 7808, 9760, 13492, 16865, 19520, 26984, 33730, 39040, 53968, 67460, 107936, 134920, 205753, 215872, 269840, 411506, 431744, 539680, 823012, 1028765, 1079360, 1646024, 2057530, 2158720, 3292048, 4115060, 6584096, 8230120, 13168192, 16460240, 26336384, 32920480, 65840960, 131681920]

約数ペア:

[(1, 131681920), (2, 65840960), (4, 32920480), (5, 26336384), (8, 16460240), (10, 13168192), (16, 8230120), (20, 6584096), (32, 4115060), (40, 3292048), (61, 2158720), (64, 2057530), (80, 1646024), (122, 1079360), (128, 1028765), (160, 823012), (244, 539680), (305, 431744), (320, 411506), (488, 269840), (610, 215872), (640, 205753), (976, 134920), (1220, 107936), (1952, 67460), (2440, 53968), (3373, 39040), (3904, 33730), (4880, 26984), (6746, 19520), (7808, 16865), (9760, 13492)]