20799870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:450

約数の個数: 128

約数和(自身を含む): 64834560

約数和(自身を除く): 44034690

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 19, 21, 26, 30, 35, 38, 39, 42, 57, 65, 70, 78, 91, 95, 105, 114, 130, 133, 182, 190, 195, 210, 247, 266, 273, 285, 390, 399, 401, 455, 494, 546, 570, 665, 741, 798, 802, 910, 1203, 1235, 1330, 1365, 1482, 1729, 1995, 2005, 2406, 2470, 2730, 2807, 3458, 3705, 3990, 4010, 5187, 5213, 5614, 6015, 7410, 7619, 8421, 8645, 10374, 10426, 12030, 14035, 15238, 15639, 16842, 17290, 22857, 25935, 26065, 28070, 31278, 36491, 38095, 42105, 45714, 51870, 52130, 53333, 72982, 76190, 78195, 84210, 99047, 106666, 109473, 114285, 156390, 159999, 182455, 198094, 218946, 228570, 266665, 297141, 319998, 364910, 495235, 533330, 547365, 594282, 693329, 799995, 990470, 1094730, 1386658, 1485705, 1599990, 2079987, 2971410, 3466645, 4159974, 6933290, 10399935, 20799870]

約数ペア:

[(1, 20799870), (2, 10399935), (3, 6933290), (5, 4159974), (6, 3466645), (7, 2971410), (10, 2079987), (13, 1599990), (14, 1485705), (15, 1386658), (19, 1094730), (21, 990470), (26, 799995), (30, 693329), (35, 594282), (38, 547365), (39, 533330), (42, 495235), (57, 364910), (65, 319998), (70, 297141), (78, 266665), (91, 228570), (95, 218946), (105, 198094), (114, 182455), (130, 159999), (133, 156390), (182, 114285), (190, 109473), (195, 106666), (210, 99047), (247, 84210), (266, 78195), (273, 76190), (285, 72982), (390, 53333), (399, 52130), (401, 51870), (455, 45714), (494, 42105), (546, 38095), (570, 36491), (665, 31278), (741, 28070), (798, 26065), (802, 25935), (910, 22857), (1203, 17290), (1235, 16842), (1330, 15639), (1365, 15238), (1482, 14035), (1729, 12030), (1995, 10426), (2005, 10374), (2406, 8645), (2470, 8421), (2730, 7619), (2807, 7410), (3458, 6015), (3705, 5614), (3990, 5213), (4010, 5187)]