21783880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28663}}^1$

素因数の和:28693

約数の個数: 32

約数和(自身を含む): 51595200

約数和(自身を除く): 29811320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28663, 57326, 114652, 143315, 229304, 286630, 544597, 573260, 1089194, 1146520, 2178388, 2722985, 4356776, 5445970, 10891940, 21783880]

約数ペア:

[(1, 21783880), (2, 10891940), (4, 5445970), (5, 4356776), (8, 2722985), (10, 2178388), (19, 1146520), (20, 1089194), (38, 573260), (40, 544597), (76, 286630), (95, 229304), (152, 143315), (190, 114652), (380, 57326), (760, 28663)]