28171780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{673}}^1$

素因数の和:725

約数の個数: 96

約数和(自身を含む): 76091904

約数和(自身を除く): 47920124

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 35, 46, 52, 65, 70, 91, 92, 115, 130, 140, 161, 182, 230, 260, 299, 322, 364, 455, 460, 598, 644, 673, 805, 910, 1196, 1346, 1495, 1610, 1820, 2093, 2692, 2990, 3220, 3365, 4186, 4711, 5980, 6730, 8372, 8749, 9422, 10465, 13460, 15479, 17498, 18844, 20930, 23555, 30958, 34996, 41860, 43745, 47110, 61243, 61916, 77395, 87490, 94220, 108353, 122486, 154790, 174980, 201227, 216706, 244972, 306215, 309580, 402454, 433412, 541765, 612430, 804908, 1006135, 1083530, 1224860, 1408589, 2012270, 2167060, 2817178, 4024540, 5634356, 7042945, 14085890, 28171780]

約数ペア:

[(1, 28171780), (2, 14085890), (4, 7042945), (5, 5634356), (7, 4024540), (10, 2817178), (13, 2167060), (14, 2012270), (20, 1408589), (23, 1224860), (26, 1083530), (28, 1006135), (35, 804908), (46, 612430), (52, 541765), (65, 433412), (70, 402454), (91, 309580), (92, 306215), (115, 244972), (130, 216706), (140, 201227), (161, 174980), (182, 154790), (230, 122486), (260, 108353), (299, 94220), (322, 87490), (364, 77395), (455, 61916), (460, 61243), (598, 47110), (644, 43745), (673, 41860), (805, 34996), (910, 30958), (1196, 23555), (1346, 20930), (1495, 18844), (1610, 17498), (1820, 15479), (2093, 13460), (2692, 10465), (2990, 9422), (3220, 8749), (3365, 8372), (4186, 6730), (4711, 5980)]