20073880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{433}}^1$

素因数の和:524

約数の個数: 64

約数和(自身を含む): 48434400

約数和(自身を除く): 28360520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 380, 433, 488, 610, 760, 866, 1159, 1220, 1732, 2165, 2318, 2440, 3464, 4330, 4636, 5795, 8227, 8660, 9272, 11590, 16454, 17320, 23180, 26413, 32908, 41135, 46360, 52826, 65816, 82270, 105652, 132065, 164540, 211304, 264130, 329080, 501847, 528260, 1003694, 1056520, 2007388, 2509235, 4014776, 5018470, 10036940, 20073880]

約数ペア:

[(1, 20073880), (2, 10036940), (4, 5018470), (5, 4014776), (8, 2509235), (10, 2007388), (19, 1056520), (20, 1003694), (38, 528260), (40, 501847), (61, 329080), (76, 264130), (95, 211304), (122, 164540), (152, 132065), (190, 105652), (244, 82270), (305, 65816), (380, 52826), (433, 46360), (488, 41135), (610, 32908), (760, 26413), (866, 23180), (1159, 17320), (1220, 16454), (1732, 11590), (2165, 9272), (2318, 8660), (2440, 8227), (3464, 5795), (4330, 4636)]