210015080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:315

約数の個数: 128

約数和(自身を含む): 541209600

約数和(自身を除く): 331194520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 89, 110, 124, 155, 173, 178, 220, 248, 310, 341, 346, 356, 440, 445, 620, 682, 692, 712, 865, 890, 979, 1240, 1364, 1384, 1705, 1730, 1780, 1903, 1958, 2728, 2759, 3410, 3460, 3560, 3806, 3916, 4895, 5363, 5518, 6820, 6920, 7612, 7832, 9515, 9790, 10726, 11036, 13640, 13795, 15224, 15397, 19030, 19580, 21452, 22072, 26815, 27590, 30349, 30794, 38060, 39160, 42904, 53630, 55180, 58993, 60698, 61588, 76120, 76985, 107260, 110360, 117986, 121396, 123176, 151745, 153970, 169367, 214520, 235972, 242792, 294965, 303490, 307940, 338734, 471944, 477307, 589930, 606980, 615880, 677468, 846835, 954614, 1179860, 1213960, 1354936, 1693670, 1909228, 2359720, 2386535, 3387340, 3818456, 4773070, 5250377, 6774680, 9546140, 10500754, 19092280, 21001508, 26251885, 42003016, 52503770, 105007540, 210015080]

約数ペア:

[(1, 210015080), (2, 105007540), (4, 52503770), (5, 42003016), (8, 26251885), (10, 21001508), (11, 19092280), (20, 10500754), (22, 9546140), (31, 6774680), (40, 5250377), (44, 4773070), (55, 3818456), (62, 3387340), (88, 2386535), (89, 2359720), (110, 1909228), (124, 1693670), (155, 1354936), (173, 1213960), (178, 1179860), (220, 954614), (248, 846835), (310, 677468), (341, 615880), (346, 606980), (356, 589930), (440, 477307), (445, 471944), (620, 338734), (682, 307940), (692, 303490), (712, 294965), (865, 242792), (890, 235972), (979, 214520), (1240, 169367), (1364, 153970), (1384, 151745), (1705, 123176), (1730, 121396), (1780, 117986), (1903, 110360), (1958, 107260), (2728, 76985), (2759, 76120), (3410, 61588), (3460, 60698), (3560, 58993), (3806, 55180), (3916, 53630), (4895, 42904), (5363, 39160), (5518, 38060), (6820, 30794), (6920, 30349), (7612, 27590), (7832, 26815), (9515, 22072), (9790, 21452), (10726, 19580), (11036, 19030), (13640, 15397), (13795, 15224)]