154789940

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{1787}}^1$

素因数の和:1928

約数の個数: 48

約数和(自身を含む): 335228544

約数和(自身を除く): 180438604

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 244, 284, 305, 355, 610, 710, 1220, 1420, 1787, 3574, 4331, 7148, 8662, 8935, 17324, 17870, 21655, 35740, 43310, 86620, 109007, 126877, 218014, 253754, 436028, 507508, 545035, 634385, 1090070, 1268770, 2180140, 2537540, 7739497, 15478994, 30957988, 38697485, 77394970, 154789940]

約数ペア:

[(1, 154789940), (2, 77394970), (4, 38697485), (5, 30957988), (10, 15478994), (20, 7739497), (61, 2537540), (71, 2180140), (122, 1268770), (142, 1090070), (244, 634385), (284, 545035), (305, 507508), (355, 436028), (610, 253754), (710, 218014), (1220, 126877), (1420, 109007), (1787, 86620), (3574, 43310), (4331, 35740), (7148, 21655), (8662, 17870), (8935, 17324)]