21219960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:301

約数の個数: 128

約数和(自身を含む): 68947200

約数和(自身を除く): 47727240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 41, 57, 60, 76, 82, 95, 114, 120, 123, 152, 164, 190, 205, 227, 228, 246, 285, 328, 380, 410, 454, 456, 492, 570, 615, 681, 760, 779, 820, 908, 984, 1135, 1140, 1230, 1362, 1558, 1640, 1816, 2270, 2280, 2337, 2460, 2724, 3116, 3405, 3895, 4313, 4540, 4674, 4920, 5448, 6232, 6810, 7790, 8626, 9080, 9307, 9348, 11685, 12939, 13620, 15580, 17252, 18614, 18696, 21565, 23370, 25878, 27240, 27921, 31160, 34504, 37228, 43130, 46535, 46740, 51756, 55842, 64695, 74456, 86260, 93070, 93480, 103512, 111684, 129390, 139605, 172520, 176833, 186140, 223368, 258780, 279210, 353666, 372280, 517560, 530499, 558420, 707332, 884165, 1060998, 1116840, 1414664, 1768330, 2121996, 2652495, 3536660, 4243992, 5304990, 7073320, 10609980, 21219960]

約数ペア:

[(1, 21219960), (2, 10609980), (3, 7073320), (4, 5304990), (5, 4243992), (6, 3536660), (8, 2652495), (10, 2121996), (12, 1768330), (15, 1414664), (19, 1116840), (20, 1060998), (24, 884165), (30, 707332), (38, 558420), (40, 530499), (41, 517560), (57, 372280), (60, 353666), (76, 279210), (82, 258780), (95, 223368), (114, 186140), (120, 176833), (123, 172520), (152, 139605), (164, 129390), (190, 111684), (205, 103512), (227, 93480), (228, 93070), (246, 86260), (285, 74456), (328, 64695), (380, 55842), (410, 51756), (454, 46740), (456, 46535), (492, 43130), (570, 37228), (615, 34504), (681, 31160), (760, 27921), (779, 27240), (820, 25878), (908, 23370), (984, 21565), (1135, 18696), (1140, 18614), (1230, 17252), (1362, 15580), (1558, 13620), (1640, 12939), (1816, 11685), (2270, 9348), (2280, 9307), (2337, 9080), (2460, 8626), (2724, 7790), (3116, 6810), (3405, 6232), (3895, 5448), (4313, 4920), (4540, 4674)]