90143720

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{17203}}^1$

素因数の和:17345

約数の個数: 32

約数和(自身を含む): 204383520

約数和(自身を除く): 114239800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 17203, 34406, 68812, 86015, 137624, 172030, 344060, 688120, 2253593, 4507186, 9014372, 11267965, 18028744, 22535930, 45071860, 90143720]

約数ペア:

[(1, 90143720), (2, 45071860), (4, 22535930), (5, 18028744), (8, 11267965), (10, 9014372), (20, 4507186), (40, 2253593), (131, 688120), (262, 344060), (524, 172030), (655, 137624), (1048, 86015), (1310, 68812), (2620, 34406), (5240, 17203)]