16544420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 35997696

約数和(自身を除く): 19453276

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 191, 244, 284, 305, 355, 382, 610, 710, 764, 955, 1220, 1420, 1910, 3820, 4331, 8662, 11651, 13561, 17324, 21655, 23302, 27122, 43310, 46604, 54244, 58255, 67805, 86620, 116510, 135610, 233020, 271220, 827221, 1654442, 3308884, 4136105, 8272210, 16544420]

約数ペア:

[(1, 16544420), (2, 8272210), (4, 4136105), (5, 3308884), (10, 1654442), (20, 827221), (61, 271220), (71, 233020), (122, 135610), (142, 116510), (191, 86620), (244, 67805), (284, 58255), (305, 54244), (355, 46604), (382, 43310), (610, 27122), (710, 23302), (764, 21655), (955, 17324), (1220, 13561), (1420, 11651), (1910, 8662), (3820, 4331)]