221400000020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{673}}^1\times {\mathrm{4783}}^1$

素因数の和:5665

約数の個数: 96

約数和(自身を含む): 492948718080

約数和(自身を除く): 271548718060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 181, 190, 362, 380, 673, 724, 905, 1346, 1810, 2692, 3365, 3439, 3620, 4783, 6730, 6878, 9566, 12787, 13460, 13756, 17195, 19132, 23915, 25574, 34390, 47830, 51148, 63935, 68780, 90877, 95660, 121813, 127870, 181754, 243626, 255740, 363508, 454385, 487252, 609065, 865723, 908770, 1218130, 1731446, 1817540, 2314447, 2436260, 3218959, 3462892, 4328615, 4628894, 6437918, 8657230, 9257788, 11572235, 12875836, 16094795, 16448737, 17314460, 23144470, 32189590, 32897474, 46288940, 61160221, 64379180, 65794948, 82243685, 122320442, 164487370, 244640884, 305801105, 328974740, 582631579, 611602210, 1165263158, 1223204420, 2330526316, 2913157895, 5826315790, 11070000001, 11652631580, 22140000002, 44280000004, 55350000005, 110700000010, 221400000020]

約数ペア:

[(1, 221400000020), (2, 110700000010), (4, 55350000005), (5, 44280000004), (10, 22140000002), (19, 11652631580), (20, 11070000001), (38, 5826315790), (76, 2913157895), (95, 2330526316), (181, 1223204420), (190, 1165263158), (362, 611602210), (380, 582631579), (673, 328974740), (724, 305801105), (905, 244640884), (1346, 164487370), (1810, 122320442), (2692, 82243685), (3365, 65794948), (3439, 64379180), (3620, 61160221), (4783, 46288940), (6730, 32897474), (6878, 32189590), (9566, 23144470), (12787, 17314460), (13460, 16448737), (13756, 16094795), (17195, 12875836), (19132, 11572235), (23915, 9257788), (25574, 8657230), (34390, 6437918), (47830, 4628894), (51148, 4328615), (63935, 3462892), (68780, 3218959), (90877, 2436260), (95660, 2314447), (121813, 1817540), (127870, 1731446), (181754, 1218130), (243626, 908770), (255740, 865723), (363508, 609065), (454385, 487252)]