638962380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{507113}}^1$

素因数の和:507135

約数の個数: 72

約数和(自身を含む): 2215073952

約数和(自身を除く): 1576111572

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 507113, 1014226, 1521339, 2028452, 2535565, 3042678, 3549791, 4564017, 5071130, 6085356, 7099582, 7606695, 9128034, 10142260, 10649373, 14199164, 15213390, 17748955, 18256068, 21298746, 22820085, 30426780, 31948119, 35497910, 42597492, 45640170, 53246865, 63896238, 70995820, 91280340, 106493730, 127792476, 159740595, 212987460, 319481190, 638962380]

約数ペア:

[(1, 638962380), (2, 319481190), (3, 212987460), (4, 159740595), (5, 127792476), (6, 106493730), (7, 91280340), (9, 70995820), (10, 63896238), (12, 53246865), (14, 45640170), (15, 42597492), (18, 35497910), (20, 31948119), (21, 30426780), (28, 22820085), (30, 21298746), (35, 18256068), (36, 17748955), (42, 15213390), (45, 14199164), (60, 10649373), (63, 10142260), (70, 9128034), (84, 7606695), (90, 7099582), (105, 6085356), (126, 5071130), (140, 4564017), (180, 3549791), (210, 3042678), (252, 2535565), (315, 2028452), (420, 1521339), (630, 1014226), (1260, 507113)]