21603798

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{349}}^1$

素因数の和:557

約数の個数: 48

約数和(自身を含む): 49686000

約数和(自身を除く): 28082202

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 181, 342, 349, 362, 543, 698, 1047, 1086, 1629, 2094, 3141, 3258, 3439, 6282, 6631, 6878, 10317, 13262, 19893, 20634, 30951, 39786, 59679, 61902, 63169, 119358, 126338, 189507, 379014, 568521, 1137042, 1200211, 2400422, 3600633, 7201266, 10801899, 21603798]

約数ペア:

[(1, 21603798), (2, 10801899), (3, 7201266), (6, 3600633), (9, 2400422), (18, 1200211), (19, 1137042), (38, 568521), (57, 379014), (114, 189507), (171, 126338), (181, 119358), (342, 63169), (349, 61902), (362, 59679), (543, 39786), (698, 30951), (1047, 20634), (1086, 19893), (1629, 13262), (2094, 10317), (3141, 6878), (3258, 6631), (3439, 6282)]