19915605

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{5087}}^1$

素因数の和:5130

約数の個数: 32

約数和(自身を含む): 36633600

約数和(自身を除く): 16717995

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 5087, 15261, 25435, 45783, 76305, 137349, 147523, 228915, 442569, 686745, 737615, 1327707, 2212845, 3983121, 6638535, 19915605]

約数ペア:

[(1, 19915605), (3, 6638535), (5, 3983121), (9, 2212845), (15, 1327707), (27, 737615), (29, 686745), (45, 442569), (87, 228915), (135, 147523), (145, 137349), (261, 76305), (435, 45783), (783, 25435), (1305, 15261), (3915, 5087)]