81508020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:246

約数の個数: 144

約数和(自身を含む): 255615360

約数和(自身を除く): 174107340

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 103, 109, 110, 121, 132, 165, 206, 218, 220, 242, 309, 327, 330, 363, 412, 436, 484, 515, 545, 605, 618, 654, 660, 726, 1030, 1090, 1133, 1199, 1210, 1236, 1308, 1452, 1545, 1635, 1815, 2060, 2180, 2266, 2398, 2420, 3090, 3270, 3399, 3597, 3630, 4532, 4796, 5665, 5995, 6180, 6540, 6798, 7194, 7260, 11227, 11330, 11990, 12463, 13189, 13596, 14388, 16995, 17985, 22454, 22660, 23980, 24926, 26378, 33681, 33990, 35970, 37389, 39567, 44908, 49852, 52756, 56135, 62315, 65945, 67362, 67980, 71940, 74778, 79134, 112270, 123497, 124630, 131890, 134724, 149556, 158268, 168405, 186945, 197835, 224540, 246994, 249260, 263780, 336810, 370491, 373890, 395670, 493988, 617485, 673620, 740982, 747780, 791340, 1234970, 1358467, 1481964, 1852455, 2469940, 2716934, 3704910, 4075401, 5433868, 6792335, 7409820, 8150802, 13584670, 16301604, 20377005, 27169340, 40754010, 81508020]

約数ペア:

[(1, 81508020), (2, 40754010), (3, 27169340), (4, 20377005), (5, 16301604), (6, 13584670), (10, 8150802), (11, 7409820), (12, 6792335), (15, 5433868), (20, 4075401), (22, 3704910), (30, 2716934), (33, 2469940), (44, 1852455), (55, 1481964), (60, 1358467), (66, 1234970), (103, 791340), (109, 747780), (110, 740982), (121, 673620), (132, 617485), (165, 493988), (206, 395670), (218, 373890), (220, 370491), (242, 336810), (309, 263780), (327, 249260), (330, 246994), (363, 224540), (412, 197835), (436, 186945), (484, 168405), (515, 158268), (545, 149556), (605, 134724), (618, 131890), (654, 124630), (660, 123497), (726, 112270), (1030, 79134), (1090, 74778), (1133, 71940), (1199, 67980), (1210, 67362), (1236, 65945), (1308, 62315), (1452, 56135), (1545, 52756), (1635, 49852), (1815, 44908), (2060, 39567), (2180, 37389), (2266, 35970), (2398, 33990), (2420, 33681), (3090, 26378), (3270, 24926), (3399, 23980), (3597, 22660), (3630, 22454), (4532, 17985), (4796, 16995), (5665, 14388), (5995, 13596), (6180, 13189), (6540, 12463), (6798, 11990), (7194, 11330), (7260, 11227)]