128972970

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{204719}}^1$

素因数の和:204739

約数の個数: 48

約数和(自身を含む): 383235840

約数和(自身を除く): 254262870

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 204719, 409438, 614157, 1023595, 1228314, 1433033, 1842471, 2047190, 2866066, 3070785, 3684942, 4299099, 6141570, 7165165, 8598198, 9212355, 12897297, 14330330, 18424710, 21495495, 25794594, 42990990, 64486485, 128972970]

約数ペア:

[(1, 128972970), (2, 64486485), (3, 42990990), (5, 25794594), (6, 21495495), (7, 18424710), (9, 14330330), (10, 12897297), (14, 9212355), (15, 8598198), (18, 7165165), (21, 6141570), (30, 4299099), (35, 3684942), (42, 3070785), (45, 2866066), (63, 2047190), (70, 1842471), (90, 1433033), (105, 1228314), (126, 1023595), (210, 614157), (315, 409438), (630, 204719)]