19501700

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 45205440

約数和(自身を除く): 25703740

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 61, 92, 100, 115, 122, 139, 230, 244, 278, 305, 460, 556, 575, 610, 695, 1150, 1220, 1390, 1403, 1525, 2300, 2780, 2806, 3050, 3197, 3475, 5612, 6100, 6394, 6950, 7015, 8479, 12788, 13900, 14030, 15985, 16958, 28060, 31970, 33916, 35075, 42395, 63940, 70150, 79925, 84790, 140300, 159850, 169580, 195017, 211975, 319700, 390034, 423950, 780068, 847900, 975085, 1950170, 3900340, 4875425, 9750850, 19501700]

約数ペア:

[(1, 19501700), (2, 9750850), (4, 4875425), (5, 3900340), (10, 1950170), (20, 975085), (23, 847900), (25, 780068), (46, 423950), (50, 390034), (61, 319700), (92, 211975), (100, 195017), (115, 169580), (122, 159850), (139, 140300), (230, 84790), (244, 79925), (278, 70150), (305, 63940), (460, 42395), (556, 35075), (575, 33916), (610, 31970), (695, 28060), (1150, 16958), (1220, 15985), (1390, 14030), (1403, 13900), (1525, 12788), (2300, 8479), (2780, 7015), (2806, 6950), (3050, 6394), (3197, 6100), (3475, 5612)]