20491443

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1$

素因数の和:121

約数の個数: 72

約数和(自身を含む): 38514528

約数和(自身を除く): 18023085

約数列:

[1, 3, 7, 9, 17, 19, 21, 51, 53, 57, 63, 119, 133, 153, 159, 171, 323, 357, 361, 371, 399, 477, 901, 969, 1007, 1071, 1083, 1113, 1197, 2261, 2527, 2703, 2907, 3021, 3249, 3339, 6137, 6307, 6783, 7049, 7581, 8109, 9063, 17119, 18411, 18921, 19133, 20349, 21147, 22743, 42959, 51357, 55233, 56763, 57399, 63441, 119833, 128877, 133931, 154071, 172197, 325261, 359499, 386631, 401793, 975783, 1078497, 1205379, 2276827, 2927349, 6830481, 20491443]

約数ペア:

[(1, 20491443), (3, 6830481), (7, 2927349), (9, 2276827), (17, 1205379), (19, 1078497), (21, 975783), (51, 401793), (53, 386631), (57, 359499), (63, 325261), (119, 172197), (133, 154071), (153, 133931), (159, 128877), (171, 119833), (323, 63441), (357, 57399), (361, 56763), (371, 55233), (399, 51357), (477, 42959), (901, 22743), (969, 21147), (1007, 20349), (1071, 19133), (1083, 18921), (1113, 18411), (1197, 17119), (2261, 9063), (2527, 8109), (2703, 7581), (2907, 7049), (3021, 6783), (3249, 6307), (3339, 6137)]