25680400

素因数分解:

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

素因数の和:177

約数の個数: 120

約数和(自身を含む): 67654400

約数和(自身を除く): 41974000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 31, 38, 40, 50, 62, 76, 80, 95, 100, 109, 124, 152, 155, 190, 200, 218, 248, 304, 310, 380, 400, 436, 475, 496, 545, 589, 620, 760, 775, 872, 950, 1090, 1178, 1240, 1520, 1550, 1744, 1900, 2071, 2180, 2356, 2480, 2725, 2945, 3100, 3379, 3800, 4142, 4360, 4712, 5450, 5890, 6200, 6758, 7600, 8284, 8720, 9424, 10355, 10900, 11780, 12400, 13516, 14725, 16568, 16895, 20710, 21800, 23560, 27032, 29450, 33136, 33790, 41420, 43600, 47120, 51775, 54064, 58900, 64201, 67580, 82840, 84475, 103550, 117800, 128402, 135160, 165680, 168950, 207100, 235600, 256804, 270320, 321005, 337900, 414200, 513608, 642010, 675800, 828400, 1027216, 1284020, 1351600, 1605025, 2568040, 3210050, 5136080, 6420100, 12840200, 25680400]

約数ペア:

[(1, 25680400), (2, 12840200), (4, 6420100), (5, 5136080), (8, 3210050), (10, 2568040), (16, 1605025), (19, 1351600), (20, 1284020), (25, 1027216), (31, 828400), (38, 675800), (40, 642010), (50, 513608), (62, 414200), (76, 337900), (80, 321005), (95, 270320), (100, 256804), (109, 235600), (124, 207100), (152, 168950), (155, 165680), (190, 135160), (200, 128402), (218, 117800), (248, 103550), (304, 84475), (310, 82840), (380, 67580), (400, 64201), (436, 58900), (475, 54064), (496, 51775), (545, 47120), (589, 43600), (620, 41420), (760, 33790), (775, 33136), (872, 29450), (950, 27032), (1090, 23560), (1178, 21800), (1240, 20710), (1520, 16895), (1550, 16568), (1744, 14725), (1900, 13516), (2071, 12400), (2180, 11780), (2356, 10900), (2480, 10355), (2725, 9424), (2945, 8720), (3100, 8284), (3379, 7600), (3800, 6758), (4142, 6200), (4360, 5890), (4712, 5450)]