19914400

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:135

約数の個数: 144

約数和(自身を含む): 55496448

約数和(自身を除く): 35582048

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 31, 32, 40, 44, 50, 55, 62, 73, 80, 88, 100, 110, 124, 146, 155, 160, 176, 200, 220, 248, 275, 292, 310, 341, 352, 365, 400, 440, 496, 550, 584, 620, 682, 730, 775, 800, 803, 880, 992, 1100, 1168, 1240, 1364, 1460, 1550, 1606, 1705, 1760, 1825, 2200, 2263, 2336, 2480, 2728, 2920, 3100, 3212, 3410, 3650, 4015, 4400, 4526, 4960, 5456, 5840, 6200, 6424, 6820, 7300, 8030, 8525, 8800, 9052, 10912, 11315, 11680, 12400, 12848, 13640, 14600, 16060, 17050, 18104, 20075, 22630, 24800, 24893, 25696, 27280, 29200, 32120, 34100, 36208, 40150, 45260, 49786, 54560, 56575, 58400, 64240, 68200, 72416, 80300, 90520, 99572, 113150, 124465, 128480, 136400, 160600, 181040, 199144, 226300, 248930, 272800, 321200, 362080, 398288, 452600, 497860, 622325, 642400, 796576, 905200, 995720, 1244650, 1810400, 1991440, 2489300, 3982880, 4978600, 9957200, 19914400]

約数ペア:

[(1, 19914400), (2, 9957200), (4, 4978600), (5, 3982880), (8, 2489300), (10, 1991440), (11, 1810400), (16, 1244650), (20, 995720), (22, 905200), (25, 796576), (31, 642400), (32, 622325), (40, 497860), (44, 452600), (50, 398288), (55, 362080), (62, 321200), (73, 272800), (80, 248930), (88, 226300), (100, 199144), (110, 181040), (124, 160600), (146, 136400), (155, 128480), (160, 124465), (176, 113150), (200, 99572), (220, 90520), (248, 80300), (275, 72416), (292, 68200), (310, 64240), (341, 58400), (352, 56575), (365, 54560), (400, 49786), (440, 45260), (496, 40150), (550, 36208), (584, 34100), (620, 32120), (682, 29200), (730, 27280), (775, 25696), (800, 24893), (803, 24800), (880, 22630), (992, 20075), (1100, 18104), (1168, 17050), (1240, 16060), (1364, 14600), (1460, 13640), (1550, 12848), (1606, 12400), (1705, 11680), (1760, 11315), (1825, 10912), (2200, 9052), (2263, 8800), (2336, 8525), (2480, 8030), (2728, 7300), (2920, 6820), (3100, 6424), (3212, 6200), (3410, 5840), (3650, 5456), (4015, 4960), (4400, 4526)]