20199380620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^2$

素因数の和:592

約数の個数: 144

約数和(自身を含む): 48201822144

約数和(自身を除く): 28002441524

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 41, 46, 68, 82, 85, 92, 115, 164, 170, 205, 230, 251, 340, 391, 410, 460, 502, 697, 782, 820, 943, 1004, 1255, 1394, 1564, 1886, 1955, 2510, 2788, 3485, 3772, 3910, 4267, 4715, 5020, 5773, 6970, 7820, 8534, 9430, 10291, 11546, 13940, 16031, 17068, 18860, 20582, 21335, 23092, 28865, 32062, 41164, 42670, 51455, 57730, 63001, 64124, 80155, 85340, 98141, 102910, 115460, 126002, 160310, 174947, 196282, 205820, 236693, 252004, 315005, 320620, 349894, 392564, 473386, 490705, 630010, 699788, 874735, 946772, 981410, 1071017, 1183465, 1260020, 1449023, 1749470, 1962820, 2142034, 2366930, 2583041, 2898046, 3498940, 4023781, 4284068, 4733860, 5166082, 5355085, 5796092, 7245115, 8047562, 10332164, 10710170, 12915205, 14490230, 16095124, 20118905, 21420340, 24633391, 25830410, 28980460, 40237810, 43911697, 49266782, 51660820, 59409943, 80475620, 87823394, 98533564, 118819886, 123166955, 175646788, 219558485, 237639772, 246333910, 297049715, 439116970, 492667820, 594099430, 878233940, 1009969031, 1188198860, 2019938062, 4039876124, 5049845155, 10099690310, 20199380620]

約数ペア:

[(1, 20199380620), (2, 10099690310), (4, 5049845155), (5, 4039876124), (10, 2019938062), (17, 1188198860), (20, 1009969031), (23, 878233940), (34, 594099430), (41, 492667820), (46, 439116970), (68, 297049715), (82, 246333910), (85, 237639772), (92, 219558485), (115, 175646788), (164, 123166955), (170, 118819886), (205, 98533564), (230, 87823394), (251, 80475620), (340, 59409943), (391, 51660820), (410, 49266782), (460, 43911697), (502, 40237810), (697, 28980460), (782, 25830410), (820, 24633391), (943, 21420340), (1004, 20118905), (1255, 16095124), (1394, 14490230), (1564, 12915205), (1886, 10710170), (1955, 10332164), (2510, 8047562), (2788, 7245115), (3485, 5796092), (3772, 5355085), (3910, 5166082), (4267, 4733860), (4715, 4284068), (5020, 4023781), (5773, 3498940), (6970, 2898046), (7820, 2583041), (8534, 2366930), (9430, 2142034), (10291, 1962820), (11546, 1749470), (13940, 1449023), (16031, 1260020), (17068, 1183465), (18860, 1071017), (20582, 981410), (21335, 946772), (23092, 874735), (28865, 699788), (32062, 630010), (41164, 490705), (42670, 473386), (51455, 392564), (57730, 349894), (63001, 320620), (64124, 315005), (80155, 252004), (85340, 236693), (98141, 205820), (102910, 196282), (115460, 174947), (126002, 160310)]