21254350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1721}}^1$

素因数の和:1765

約数の個数: 48

約数和(自身を含む): 44840880

約数和(自身を除く): 23586530

約数列:

[1, 2, 5, 10, 13, 19, 25, 26, 38, 50, 65, 95, 130, 190, 247, 325, 475, 494, 650, 950, 1235, 1721, 2470, 3442, 6175, 8605, 12350, 17210, 22373, 32699, 43025, 44746, 65398, 86050, 111865, 163495, 223730, 326990, 425087, 559325, 817475, 850174, 1118650, 1634950, 2125435, 4250870, 10627175, 21254350]

約数ペア:

[(1, 21254350), (2, 10627175), (5, 4250870), (10, 2125435), (13, 1634950), (19, 1118650), (25, 850174), (26, 817475), (38, 559325), (50, 425087), (65, 326990), (95, 223730), (130, 163495), (190, 111865), (247, 86050), (325, 65398), (475, 44746), (494, 43025), (650, 32699), (950, 22373), (1235, 17210), (1721, 12350), (2470, 8605), (3442, 6175)]