30431920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20021}}^1$

素因数の和:20053

約数の個数: 40

約数和(自身を含む): 74481840

約数和(自身を除く): 44049920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 20021, 40042, 80084, 100105, 160168, 200210, 320336, 380399, 400420, 760798, 800840, 1521596, 1601680, 1901995, 3043192, 3803990, 6086384, 7607980, 15215960, 30431920]

約数ペア:

[(1, 30431920), (2, 15215960), (4, 7607980), (5, 6086384), (8, 3803990), (10, 3043192), (16, 1901995), (19, 1601680), (20, 1521596), (38, 800840), (40, 760798), (76, 400420), (80, 380399), (95, 320336), (152, 200210), (190, 160168), (304, 100105), (380, 80084), (760, 40042), (1520, 20021)]