40651520

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1$

素因数の和:390

約数の個数: 144

約数和(自身を含む): 120187200

約数和(自身を除く): 79535680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 256, 260, 280, 320, 349, 364, 416, 448, 455, 520, 560, 640, 698, 728, 832, 896, 910, 1040, 1120, 1280, 1396, 1456, 1664, 1745, 1792, 1820, 2080, 2240, 2443, 2792, 2912, 3328, 3490, 3640, 4160, 4480, 4537, 4886, 5584, 5824, 6980, 7280, 8320, 8960, 9074, 9772, 11168, 11648, 12215, 13960, 14560, 16640, 18148, 19544, 22336, 22685, 23296, 24430, 27920, 29120, 31759, 36296, 39088, 44672, 45370, 48860, 55840, 58240, 63518, 72592, 78176, 89344, 90740, 97720, 111680, 116480, 127036, 145184, 156352, 158795, 181480, 195440, 223360, 254072, 290368, 312704, 317590, 362960, 390880, 446720, 508144, 580736, 625408, 635180, 725920, 781760, 1016288, 1161472, 1270360, 1451840, 1563520, 2032576, 2540720, 2903680, 3127040, 4065152, 5081440, 5807360, 8130304, 10162880, 20325760, 40651520]

約数ペア:

[(1, 40651520), (2, 20325760), (4, 10162880), (5, 8130304), (7, 5807360), (8, 5081440), (10, 4065152), (13, 3127040), (14, 2903680), (16, 2540720), (20, 2032576), (26, 1563520), (28, 1451840), (32, 1270360), (35, 1161472), (40, 1016288), (52, 781760), (56, 725920), (64, 635180), (65, 625408), (70, 580736), (80, 508144), (91, 446720), (104, 390880), (112, 362960), (128, 317590), (130, 312704), (140, 290368), (160, 254072), (182, 223360), (208, 195440), (224, 181480), (256, 158795), (260, 156352), (280, 145184), (320, 127036), (349, 116480), (364, 111680), (416, 97720), (448, 90740), (455, 89344), (520, 78176), (560, 72592), (640, 63518), (698, 58240), (728, 55840), (832, 48860), (896, 45370), (910, 44672), (1040, 39088), (1120, 36296), (1280, 31759), (1396, 29120), (1456, 27920), (1664, 24430), (1745, 23296), (1792, 22685), (1820, 22336), (2080, 19544), (2240, 18148), (2443, 16640), (2792, 14560), (2912, 13960), (3328, 12215), (3490, 11648), (3640, 11168), (4160, 9772), (4480, 9074), (4537, 8960), (4886, 8320), (5584, 7280), (5824, 6980)]