217831390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{7121}}^1$

素因数の和:7177

約数の個数: 64

約数和(自身を含む): 492272640

約数和(自身を除く): 274441250

約数列:

[1, 2, 5, 7, 10, 14, 19, 23, 35, 38, 46, 70, 95, 115, 133, 161, 190, 230, 266, 322, 437, 665, 805, 874, 1330, 1610, 2185, 3059, 4370, 6118, 7121, 14242, 15295, 30590, 35605, 49847, 71210, 99694, 135299, 163783, 249235, 270598, 327566, 498470, 676495, 818915, 947093, 1146481, 1352990, 1637830, 1894186, 2292962, 3111877, 4735465, 5732405, 6223754, 9470930, 11464810, 15559385, 21783139, 31118770, 43566278, 108915695, 217831390]

約数ペア:

[(1, 217831390), (2, 108915695), (5, 43566278), (7, 31118770), (10, 21783139), (14, 15559385), (19, 11464810), (23, 9470930), (35, 6223754), (38, 5732405), (46, 4735465), (70, 3111877), (95, 2292962), (115, 1894186), (133, 1637830), (161, 1352990), (190, 1146481), (230, 947093), (266, 818915), (322, 676495), (437, 498470), (665, 327566), (805, 270598), (874, 249235), (1330, 163783), (1610, 135299), (2185, 99694), (3059, 71210), (4370, 49847), (6118, 35605), (7121, 30590), (14242, 15295)]