20609820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1487}}^1$

素因数の和:1520

約数の個数: 144

約数和(自身を含む): 77995008

約数和(自身を除く): 57385188

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1487, 1540, 1980, 2310, 2772, 2974, 3465, 4461, 4620, 5948, 6930, 7435, 8922, 10409, 13383, 13860, 14870, 16357, 17844, 20818, 22305, 26766, 29740, 31227, 32714, 41636, 44610, 49071, 52045, 53532, 62454, 65428, 66915, 81785, 89220, 93681, 98142, 104090, 114499, 124908, 133830, 147213, 156135, 163570, 187362, 196284, 208180, 228998, 245355, 267660, 294426, 312270, 327140, 343497, 374724, 457996, 468405, 490710, 572495, 588852, 624540, 686994, 736065, 936810, 981420, 1030491, 1144990, 1373988, 1472130, 1717485, 1873620, 2060982, 2289980, 2944260, 3434970, 4121964, 5152455, 6869940, 10304910, 20609820]

約数ペア:

[(1, 20609820), (2, 10304910), (3, 6869940), (4, 5152455), (5, 4121964), (6, 3434970), (7, 2944260), (9, 2289980), (10, 2060982), (11, 1873620), (12, 1717485), (14, 1472130), (15, 1373988), (18, 1144990), (20, 1030491), (21, 981420), (22, 936810), (28, 736065), (30, 686994), (33, 624540), (35, 588852), (36, 572495), (42, 490710), (44, 468405), (45, 457996), (55, 374724), (60, 343497), (63, 327140), (66, 312270), (70, 294426), (77, 267660), (84, 245355), (90, 228998), (99, 208180), (105, 196284), (110, 187362), (126, 163570), (132, 156135), (140, 147213), (154, 133830), (165, 124908), (180, 114499), (198, 104090), (210, 98142), (220, 93681), (231, 89220), (252, 81785), (308, 66915), (315, 65428), (330, 62454), (385, 53532), (396, 52045), (420, 49071), (462, 44610), (495, 41636), (630, 32714), (660, 31227), (693, 29740), (770, 26766), (924, 22305), (990, 20818), (1155, 17844), (1260, 16357), (1386, 14870), (1487, 13860), (1540, 13383), (1980, 10409), (2310, 8922), (2772, 7435), (2974, 6930), (3465, 5948), (4461, 4620)]