20511584

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:124

約数の個数: 72

約数和(自身を含む): 45042480

約数和(自身を除く): 24530896

約数列:

[1, 2, 4, 8, 16, 23, 29, 31, 32, 46, 58, 62, 92, 116, 124, 184, 232, 248, 368, 464, 496, 667, 713, 736, 899, 928, 961, 992, 1334, 1426, 1798, 1922, 2668, 2852, 3596, 3844, 5336, 5704, 7192, 7688, 10672, 11408, 14384, 15376, 20677, 21344, 22103, 22816, 27869, 28768, 30752, 41354, 44206, 55738, 82708, 88412, 111476, 165416, 176824, 222952, 330832, 353648, 445904, 640987, 661664, 707296, 891808, 1281974, 2563948, 5127896, 10255792, 20511584]

約数ペア:

[(1, 20511584), (2, 10255792), (4, 5127896), (8, 2563948), (16, 1281974), (23, 891808), (29, 707296), (31, 661664), (32, 640987), (46, 445904), (58, 353648), (62, 330832), (92, 222952), (116, 176824), (124, 165416), (184, 111476), (232, 88412), (248, 82708), (368, 55738), (464, 44206), (496, 41354), (667, 30752), (713, 28768), (736, 27869), (899, 22816), (928, 22103), (961, 21344), (992, 20677), (1334, 15376), (1426, 14384), (1798, 11408), (1922, 10672), (2668, 7688), (2852, 7192), (3596, 5704), (3844, 5336)]