890453980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{659}}^1\times {\mathrm{5197}}^1$

素因数の和:5878

約数の個数: 48

約数和(自身を含む): 2017239840

約数和(自身を除く): 1126785860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 659, 1318, 2636, 3295, 5197, 6590, 8567, 10394, 13180, 17134, 20788, 25985, 34268, 42835, 51970, 67561, 85670, 103940, 135122, 171340, 270244, 337805, 675610, 1351220, 3424823, 6849646, 13699292, 17124115, 34248230, 44522699, 68496460, 89045398, 178090796, 222613495, 445226990, 890453980]

約数ペア:

[(1, 890453980), (2, 445226990), (4, 222613495), (5, 178090796), (10, 89045398), (13, 68496460), (20, 44522699), (26, 34248230), (52, 17124115), (65, 13699292), (130, 6849646), (260, 3424823), (659, 1351220), (1318, 675610), (2636, 337805), (3295, 270244), (5197, 171340), (6590, 135122), (8567, 103940), (10394, 85670), (13180, 67561), (17134, 51970), (20788, 42835), (25985, 34268)]