21172019910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1\times {\mathrm{443}}^1$

素因数の和:822

約数の個数: 128

約数和(自身を含む): 52327779840

約数和(自身を除く): 31155759930

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 73, 139, 146, 157, 219, 278, 314, 365, 417, 438, 443, 471, 695, 730, 785, 834, 886, 942, 1095, 1329, 1390, 1570, 2085, 2190, 2215, 2355, 2658, 4170, 4430, 4710, 6645, 10147, 11461, 13290, 20294, 21823, 22922, 30441, 32339, 34383, 43646, 50735, 57305, 60882, 61577, 64678, 65469, 68766, 69551, 97017, 101470, 109115, 114610, 123154, 130938, 139102, 152205, 161695, 171915, 184731, 194034, 208653, 218230, 304410, 307885, 323390, 327345, 343830, 347755, 369462, 417306, 485085, 615770, 654690, 695510, 923655, 970170, 1043265, 1593079, 1847310, 2086530, 3186158, 4495121, 4779237, 5077223, 7965395, 8990242, 9558474, 9667589, 10154446, 13485363, 15231669, 15930790, 19335178, 22475605, 23896185, 25386115, 26970726, 29002767, 30463338, 44951210, 47792370, 48337945, 50772230, 58005534, 67426815, 76158345, 96675890, 134853630, 145013835, 152316690, 290027670, 705733997, 1411467994, 2117201991, 3528669985, 4234403982, 7057339970, 10586009955, 21172019910]

約数ペア:

[(1, 21172019910), (2, 10586009955), (3, 7057339970), (5, 4234403982), (6, 3528669985), (10, 2117201991), (15, 1411467994), (30, 705733997), (73, 290027670), (139, 152316690), (146, 145013835), (157, 134853630), (219, 96675890), (278, 76158345), (314, 67426815), (365, 58005534), (417, 50772230), (438, 48337945), (443, 47792370), (471, 44951210), (695, 30463338), (730, 29002767), (785, 26970726), (834, 25386115), (886, 23896185), (942, 22475605), (1095, 19335178), (1329, 15930790), (1390, 15231669), (1570, 13485363), (2085, 10154446), (2190, 9667589), (2215, 9558474), (2355, 8990242), (2658, 7965395), (4170, 5077223), (4430, 4779237), (4710, 4495121), (6645, 3186158), (10147, 2086530), (11461, 1847310), (13290, 1593079), (20294, 1043265), (21823, 970170), (22922, 923655), (30441, 695510), (32339, 654690), (34383, 615770), (43646, 485085), (50735, 417306), (57305, 369462), (60882, 347755), (61577, 343830), (64678, 327345), (65469, 323390), (68766, 307885), (69551, 304410), (97017, 218230), (101470, 208653), (109115, 194034), (114610, 184731), (123154, 171915), (130938, 161695), (139102, 152205)]