21011830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{17657}}^1$

素因数の和:17688

約数の個数: 32

約数和(自身を含む): 45769536

約数和(自身を除く): 24757706

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 170, 238, 595, 1190, 17657, 35314, 88285, 123599, 176570, 247198, 300169, 600338, 617995, 1235990, 1500845, 2101183, 3001690, 4202366, 10505915, 21011830]

約数ペア:

[(1, 21011830), (2, 10505915), (5, 4202366), (7, 3001690), (10, 2101183), (14, 1500845), (17, 1235990), (34, 617995), (35, 600338), (70, 300169), (85, 247198), (119, 176570), (170, 123599), (238, 88285), (595, 35314), (1190, 17657)]