20336080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{787}}^1$

素因数の和:836

約数の個数: 80

約数和(自身を含む): 52764480

約数和(自身を除く): 32428400

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 787, 1292, 1360, 1520, 1574, 1615, 2584, 3148, 3230, 3935, 5168, 6296, 6460, 7870, 12592, 12920, 13379, 14953, 15740, 25840, 26758, 29906, 31480, 53516, 59812, 62960, 66895, 74765, 107032, 119624, 133790, 149530, 214064, 239248, 254201, 267580, 299060, 508402, 535160, 598120, 1016804, 1070320, 1196240, 1271005, 2033608, 2542010, 4067216, 5084020, 10168040, 20336080]

約数ペア:

[(1, 20336080), (2, 10168040), (4, 5084020), (5, 4067216), (8, 2542010), (10, 2033608), (16, 1271005), (17, 1196240), (19, 1070320), (20, 1016804), (34, 598120), (38, 535160), (40, 508402), (68, 299060), (76, 267580), (80, 254201), (85, 239248), (95, 214064), (136, 149530), (152, 133790), (170, 119624), (190, 107032), (272, 74765), (304, 66895), (323, 62960), (340, 59812), (380, 53516), (646, 31480), (680, 29906), (760, 26758), (787, 25840), (1292, 15740), (1360, 14953), (1520, 13379), (1574, 12920), (1615, 12592), (2584, 7870), (3148, 6460), (3230, 6296), (3935, 5168)]