28969720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55711}}^1$

素因数の和:55735

約数の個数: 32

約数和(自身を含む): 70197120

約数和(自身を除く): 41227400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 55711, 111422, 222844, 278555, 445688, 557110, 724243, 1114220, 1448486, 2228440, 2896972, 3621215, 5793944, 7242430, 14484860, 28969720]

約数ペア:

[(1, 28969720), (2, 14484860), (4, 7242430), (5, 5793944), (8, 3621215), (10, 2896972), (13, 2228440), (20, 1448486), (26, 1114220), (40, 724243), (52, 557110), (65, 445688), (104, 278555), (130, 222844), (260, 111422), (520, 55711)]