28853960

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 68774400

約数和(自身を除く): 39920440

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 79, 92, 115, 158, 184, 230, 316, 395, 397, 460, 632, 790, 794, 920, 1580, 1588, 1817, 1985, 3160, 3176, 3634, 3970, 7268, 7940, 9085, 9131, 14536, 15880, 18170, 18262, 31363, 36340, 36524, 45655, 62726, 72680, 73048, 91310, 125452, 156815, 182620, 250904, 313630, 365240, 627260, 721349, 1254520, 1442698, 2885396, 3606745, 5770792, 7213490, 14426980, 28853960]

約数ペア:

[(1, 28853960), (2, 14426980), (4, 7213490), (5, 5770792), (8, 3606745), (10, 2885396), (20, 1442698), (23, 1254520), (40, 721349), (46, 627260), (79, 365240), (92, 313630), (115, 250904), (158, 182620), (184, 156815), (230, 125452), (316, 91310), (395, 73048), (397, 72680), (460, 62726), (632, 45655), (790, 36524), (794, 36340), (920, 31363), (1580, 18262), (1588, 18170), (1817, 15880), (1985, 14536), (3160, 9131), (3176, 9085), (3634, 7940), (3970, 7268)]