20328840

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2689}}^1$

素因数の和:2716

約数の個数: 128

約数和(自身を含む): 77472000

約数和(自身を除く): 57143160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2689, 3780, 5378, 7560, 8067, 10756, 13445, 16134, 18823, 21512, 24201, 26890, 32268, 37646, 40335, 48402, 53780, 56469, 64536, 72603, 75292, 80670, 94115, 96804, 107560, 112938, 121005, 145206, 150584, 161340, 169407, 188230, 193608, 225876, 242010, 282345, 290412, 322680, 338814, 363015, 376460, 451752, 484020, 508221, 564690, 580824, 677628, 726030, 752920, 847035, 968040, 1016442, 1129380, 1355256, 1452060, 1694070, 2032884, 2258760, 2541105, 2904120, 3388140, 4065768, 5082210, 6776280, 10164420, 20328840]

約数ペア:

[(1, 20328840), (2, 10164420), (3, 6776280), (4, 5082210), (5, 4065768), (6, 3388140), (7, 2904120), (8, 2541105), (9, 2258760), (10, 2032884), (12, 1694070), (14, 1452060), (15, 1355256), (18, 1129380), (20, 1016442), (21, 968040), (24, 847035), (27, 752920), (28, 726030), (30, 677628), (35, 580824), (36, 564690), (40, 508221), (42, 484020), (45, 451752), (54, 376460), (56, 363015), (60, 338814), (63, 322680), (70, 290412), (72, 282345), (84, 242010), (90, 225876), (105, 193608), (108, 188230), (120, 169407), (126, 161340), (135, 150584), (140, 145206), (168, 121005), (180, 112938), (189, 107560), (210, 96804), (216, 94115), (252, 80670), (270, 75292), (280, 72603), (315, 64536), (360, 56469), (378, 53780), (420, 48402), (504, 40335), (540, 37646), (630, 32268), (756, 26890), (840, 24201), (945, 21512), (1080, 18823), (1260, 16134), (1512, 13445), (1890, 10756), (2520, 8067), (2689, 7560), (3780, 5378)]