405750320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:251

約数の個数: 160

約数和(自身を含む): 1047552000

約数和(自身を除く): 641801680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 79, 80, 95, 109, 124, 152, 155, 158, 190, 218, 248, 304, 310, 316, 380, 395, 436, 496, 545, 589, 620, 632, 760, 790, 872, 1090, 1178, 1240, 1264, 1501, 1520, 1580, 1744, 2071, 2180, 2356, 2449, 2480, 2945, 3002, 3160, 3379, 4142, 4360, 4712, 4898, 5890, 6004, 6320, 6758, 7505, 8284, 8611, 8720, 9424, 9796, 10355, 11780, 12008, 12245, 13516, 15010, 16568, 16895, 17222, 19592, 20710, 23560, 24016, 24490, 27032, 30020, 33136, 33790, 34444, 39184, 41420, 43055, 46531, 47120, 48980, 54064, 60040, 64201, 67580, 68888, 82840, 86110, 93062, 97960, 120080, 128402, 135160, 137776, 163609, 165680, 172220, 186124, 195920, 232655, 256804, 266941, 270320, 321005, 327218, 344440, 372248, 465310, 513608, 533882, 642010, 654436, 688880, 744496, 818045, 930620, 1027216, 1067764, 1284020, 1308872, 1334705, 1636090, 1861240, 2135528, 2568040, 2617744, 2669410, 3272180, 3722480, 4271056, 5071879, 5136080, 5338820, 6544360, 10143758, 10677640, 13088720, 20287516, 21355280, 25359395, 40575032, 50718790, 81150064, 101437580, 202875160, 405750320]

約数ペア:

[(1, 405750320), (2, 202875160), (4, 101437580), (5, 81150064), (8, 50718790), (10, 40575032), (16, 25359395), (19, 21355280), (20, 20287516), (31, 13088720), (38, 10677640), (40, 10143758), (62, 6544360), (76, 5338820), (79, 5136080), (80, 5071879), (95, 4271056), (109, 3722480), (124, 3272180), (152, 2669410), (155, 2617744), (158, 2568040), (190, 2135528), (218, 1861240), (248, 1636090), (304, 1334705), (310, 1308872), (316, 1284020), (380, 1067764), (395, 1027216), (436, 930620), (496, 818045), (545, 744496), (589, 688880), (620, 654436), (632, 642010), (760, 533882), (790, 513608), (872, 465310), (1090, 372248), (1178, 344440), (1240, 327218), (1264, 321005), (1501, 270320), (1520, 266941), (1580, 256804), (1744, 232655), (2071, 195920), (2180, 186124), (2356, 172220), (2449, 165680), (2480, 163609), (2945, 137776), (3002, 135160), (3160, 128402), (3379, 120080), (4142, 97960), (4360, 93062), (4712, 86110), (4898, 82840), (5890, 68888), (6004, 67580), (6320, 64201), (6758, 60040), (7505, 54064), (8284, 48980), (8611, 47120), (8720, 46531), (9424, 43055), (9796, 41420), (10355, 39184), (11780, 34444), (12008, 33790), (12245, 33136), (13516, 30020), (15010, 27032), (16568, 24490), (16895, 24016), (17222, 23560), (19592, 20710)]