289103240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{20021}}^1$

素因数の和:20070

約数の個数: 48

約数和(自身を含む): 686554380

約数和(自身を除く): 397451140

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1444, 1805, 2888, 3610, 7220, 14440, 20021, 40042, 80084, 100105, 160168, 200210, 380399, 400420, 760798, 800840, 1521596, 1901995, 3043192, 3803990, 7227581, 7607980, 14455162, 15215960, 28910324, 36137905, 57820648, 72275810, 144551620, 289103240]

約数ペア:

[(1, 289103240), (2, 144551620), (4, 72275810), (5, 57820648), (8, 36137905), (10, 28910324), (19, 15215960), (20, 14455162), (38, 7607980), (40, 7227581), (76, 3803990), (95, 3043192), (152, 1901995), (190, 1521596), (361, 800840), (380, 760798), (722, 400420), (760, 380399), (1444, 200210), (1805, 160168), (2888, 100105), (3610, 80084), (7220, 40042), (14440, 20021)]