20500620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{367}}^1$

素因数の和:412

約数の個数: 144

約数和(自身を含む): 70479360

約数和(自身を除く): 49978740

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 49, 57, 60, 70, 76, 84, 95, 98, 105, 114, 133, 140, 147, 190, 196, 210, 228, 245, 266, 285, 294, 367, 380, 399, 420, 490, 532, 570, 588, 665, 734, 735, 798, 931, 980, 1101, 1140, 1330, 1468, 1470, 1596, 1835, 1862, 1995, 2202, 2569, 2660, 2793, 2940, 3670, 3724, 3990, 4404, 4655, 5138, 5505, 5586, 6973, 7340, 7707, 7980, 9310, 10276, 11010, 11172, 12845, 13946, 13965, 15414, 17983, 18620, 20919, 22020, 25690, 27892, 27930, 30828, 34865, 35966, 38535, 41838, 48811, 51380, 53949, 55860, 69730, 71932, 77070, 83676, 89915, 97622, 104595, 107898, 139460, 146433, 154140, 179830, 195244, 209190, 215796, 244055, 269745, 292866, 341677, 359660, 418380, 488110, 539490, 585732, 683354, 732165, 976220, 1025031, 1078980, 1366708, 1464330, 1708385, 2050062, 2928660, 3416770, 4100124, 5125155, 6833540, 10250310, 20500620]

約数ペア:

[(1, 20500620), (2, 10250310), (3, 6833540), (4, 5125155), (5, 4100124), (6, 3416770), (7, 2928660), (10, 2050062), (12, 1708385), (14, 1464330), (15, 1366708), (19, 1078980), (20, 1025031), (21, 976220), (28, 732165), (30, 683354), (35, 585732), (38, 539490), (42, 488110), (49, 418380), (57, 359660), (60, 341677), (70, 292866), (76, 269745), (84, 244055), (95, 215796), (98, 209190), (105, 195244), (114, 179830), (133, 154140), (140, 146433), (147, 139460), (190, 107898), (196, 104595), (210, 97622), (228, 89915), (245, 83676), (266, 77070), (285, 71932), (294, 69730), (367, 55860), (380, 53949), (399, 51380), (420, 48811), (490, 41838), (532, 38535), (570, 35966), (588, 34865), (665, 30828), (734, 27930), (735, 27892), (798, 25690), (931, 22020), (980, 20919), (1101, 18620), (1140, 17983), (1330, 15414), (1468, 13965), (1470, 13946), (1596, 12845), (1835, 11172), (1862, 11010), (1995, 10276), (2202, 9310), (2569, 7980), (2660, 7707), (2793, 7340), (2940, 6973), (3670, 5586), (3724, 5505), (3990, 5138), (4404, 4655)]