21969700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{373}}^1$

素因数の和:437

約数の個数: 72

約数和(自身を含む): 51941120

約数和(自身を除く): 29971420

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 62, 76, 95, 100, 124, 155, 190, 310, 373, 380, 475, 589, 620, 746, 775, 950, 1178, 1492, 1550, 1865, 1900, 2356, 2945, 3100, 3730, 5890, 7087, 7460, 9325, 11563, 11780, 14174, 14725, 18650, 23126, 28348, 29450, 35435, 37300, 46252, 57815, 58900, 70870, 115630, 141740, 177175, 219697, 231260, 289075, 354350, 439394, 578150, 708700, 878788, 1098485, 1156300, 2196970, 4393940, 5492425, 10984850, 21969700]

約数ペア:

[(1, 21969700), (2, 10984850), (4, 5492425), (5, 4393940), (10, 2196970), (19, 1156300), (20, 1098485), (25, 878788), (31, 708700), (38, 578150), (50, 439394), (62, 354350), (76, 289075), (95, 231260), (100, 219697), (124, 177175), (155, 141740), (190, 115630), (310, 70870), (373, 58900), (380, 57815), (475, 46252), (589, 37300), (620, 35435), (746, 29450), (775, 28348), (950, 23126), (1178, 18650), (1492, 14725), (1550, 14174), (1865, 11780), (1900, 11563), (2356, 9325), (2945, 7460), (3100, 7087), (3730, 5890)]