890195380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1\times {\mathrm{3691}}^1$

素因数の和:4120

約数の個数: 48

約数和(自身を含む): 1935198720

約数和(自身を除く): 1045003340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 389, 620, 778, 1556, 1945, 3691, 3890, 7382, 7780, 12059, 14764, 18455, 24118, 36910, 48236, 60295, 73820, 114421, 120590, 228842, 241180, 457684, 572105, 1144210, 1435799, 2288420, 2871598, 5743196, 7178995, 14357990, 28715980, 44509769, 89019538, 178039076, 222548845, 445097690, 890195380]

約数ペア:

[(1, 890195380), (2, 445097690), (4, 222548845), (5, 178039076), (10, 89019538), (20, 44509769), (31, 28715980), (62, 14357990), (124, 7178995), (155, 5743196), (310, 2871598), (389, 2288420), (620, 1435799), (778, 1144210), (1556, 572105), (1945, 457684), (3691, 241180), (3890, 228842), (7382, 120590), (7780, 114421), (12059, 73820), (14764, 60295), (18455, 48236), (24118, 36910)]