19975560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:471

約数の個数: 128

約数和(自身を含む): 67305600

約数和(自身を除く): 47330040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 37, 40, 44, 55, 60, 66, 74, 88, 110, 111, 120, 132, 148, 165, 185, 220, 222, 264, 296, 330, 370, 407, 409, 440, 444, 555, 660, 740, 814, 818, 888, 1110, 1221, 1227, 1320, 1480, 1628, 1636, 2035, 2045, 2220, 2442, 2454, 3256, 3272, 4070, 4090, 4440, 4499, 4884, 4908, 6105, 6135, 8140, 8180, 8998, 9768, 9816, 12210, 12270, 13497, 15133, 16280, 16360, 17996, 22495, 24420, 24540, 26994, 30266, 35992, 44990, 45399, 48840, 49080, 53988, 60532, 67485, 75665, 89980, 90798, 107976, 121064, 134970, 151330, 166463, 179960, 181596, 226995, 269940, 302660, 332926, 363192, 453990, 499389, 539880, 605320, 665852, 832315, 907980, 998778, 1331704, 1664630, 1815960, 1997556, 2496945, 3329260, 3995112, 4993890, 6658520, 9987780, 19975560]

約数ペア:

[(1, 19975560), (2, 9987780), (3, 6658520), (4, 4993890), (5, 3995112), (6, 3329260), (8, 2496945), (10, 1997556), (11, 1815960), (12, 1664630), (15, 1331704), (20, 998778), (22, 907980), (24, 832315), (30, 665852), (33, 605320), (37, 539880), (40, 499389), (44, 453990), (55, 363192), (60, 332926), (66, 302660), (74, 269940), (88, 226995), (110, 181596), (111, 179960), (120, 166463), (132, 151330), (148, 134970), (165, 121064), (185, 107976), (220, 90798), (222, 89980), (264, 75665), (296, 67485), (330, 60532), (370, 53988), (407, 49080), (409, 48840), (440, 45399), (444, 44990), (555, 35992), (660, 30266), (740, 26994), (814, 24540), (818, 24420), (888, 22495), (1110, 17996), (1221, 16360), (1227, 16280), (1320, 15133), (1480, 13497), (1628, 12270), (1636, 12210), (2035, 9816), (2045, 9768), (2220, 8998), (2442, 8180), (2454, 8140), (3256, 6135), (3272, 6105), (4070, 4908), (4090, 4884), (4440, 4499)]