28748020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:337

約数の個数: 96

約数和(自身を含む): 74898432

約数和(自身を除く): 46150412

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 47, 68, 70, 85, 94, 119, 140, 170, 188, 235, 238, 257, 329, 340, 470, 476, 514, 595, 658, 799, 940, 1028, 1190, 1285, 1316, 1598, 1645, 1799, 2380, 2570, 3196, 3290, 3598, 3995, 4369, 5140, 5593, 6580, 7196, 7990, 8738, 8995, 11186, 12079, 15980, 17476, 17990, 21845, 22372, 24158, 27965, 30583, 35980, 43690, 48316, 55930, 60395, 61166, 84553, 87380, 111860, 120790, 122332, 152915, 169106, 205343, 241580, 305830, 338212, 410686, 422765, 611660, 821372, 845530, 1026715, 1437401, 1691060, 2053430, 2874802, 4106860, 5749604, 7187005, 14374010, 28748020]

約数ペア:

[(1, 28748020), (2, 14374010), (4, 7187005), (5, 5749604), (7, 4106860), (10, 2874802), (14, 2053430), (17, 1691060), (20, 1437401), (28, 1026715), (34, 845530), (35, 821372), (47, 611660), (68, 422765), (70, 410686), (85, 338212), (94, 305830), (119, 241580), (140, 205343), (170, 169106), (188, 152915), (235, 122332), (238, 120790), (257, 111860), (329, 87380), (340, 84553), (470, 61166), (476, 60395), (514, 55930), (595, 48316), (658, 43690), (799, 35980), (940, 30583), (1028, 27965), (1190, 24158), (1285, 22372), (1316, 21845), (1598, 17990), (1645, 17476), (1799, 15980), (2380, 12079), (2570, 11186), (3196, 8995), (3290, 8738), (3598, 7990), (3995, 7196), (4369, 6580), (5140, 5593)]