19645.0000000

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:556

約数の個数: 32

約数和(自身を含む): 6695136

約数和(自身を除く): 3272866

約数列:

[1, 2, 5, 10, 17, 34, 41, 82, 85, 170, 205, 410, 491, 697, 982, 1394, 2455, 3485, 4910, 6970, 8347, 16694, 20131, 40262, 41735, 83470, 100655, 201310, 342227, 684454, 1711135, 3422270]

約数ペア:

[(1, 3422270), (2, 1711135), (5, 684454), (10, 342227), (17, 201310), (34, 100655), (41, 83470), (82, 41735), (85, 40262), (170, 20131), (205, 16694), (410, 8347), (491, 6970), (697, 4910), (982, 3485), (1394, 2455)]