720460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 1735776

約数和(自身を除く): 1015316

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 163, 170, 221, 260, 326, 340, 442, 652, 815, 884, 1105, 1630, 2119, 2210, 2771, 3260, 4238, 4420, 5542, 8476, 10595, 11084, 13855, 21190, 27710, 36023, 42380, 55420, 72046, 144092, 180115, 360230, 720460]

約数ペア:

[(1, 720460), (2, 360230), (4, 180115), (5, 144092), (10, 72046), (13, 55420), (17, 42380), (20, 36023), (26, 27710), (34, 21190), (52, 13855), (65, 11084), (68, 10595), (85, 8476), (130, 5542), (163, 4420), (170, 4238), (221, 3260), (260, 2771), (326, 2210), (340, 2119), (442, 1630), (652, 1105), (815, 884)]