72721040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:181

約数の個数: 160

約数和(自身を含む): 205701120

約数和(自身を除く): 132980080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 59, 62, 70, 71, 80, 112, 118, 124, 140, 142, 155, 217, 236, 248, 280, 284, 295, 310, 355, 413, 434, 472, 496, 497, 560, 568, 590, 620, 710, 826, 868, 944, 994, 1085, 1136, 1180, 1240, 1420, 1652, 1736, 1829, 1988, 2065, 2170, 2201, 2360, 2480, 2485, 2840, 3304, 3472, 3658, 3976, 4130, 4189, 4340, 4402, 4720, 4970, 5680, 6608, 7316, 7952, 8260, 8378, 8680, 8804, 9145, 9940, 11005, 12803, 14632, 15407, 16520, 16756, 17360, 17608, 18290, 19880, 20945, 22010, 25606, 29264, 29323, 30814, 33040, 33512, 35216, 36580, 39760, 41890, 44020, 51212, 58646, 61628, 64015, 67024, 73160, 77035, 83780, 88040, 102424, 117292, 123256, 128030, 129859, 146320, 146615, 154070, 167560, 176080, 204848, 234584, 246512, 256060, 259718, 293230, 308140, 335120, 469168, 512120, 519436, 586460, 616280, 649295, 909013, 1024240, 1038872, 1172920, 1232560, 1298590, 1818026, 2077744, 2345840, 2597180, 3636052, 4545065, 5194360, 7272104, 9090130, 10388720, 14544208, 18180260, 36360520, 72721040]

約数ペア:

[(1, 72721040), (2, 36360520), (4, 18180260), (5, 14544208), (7, 10388720), (8, 9090130), (10, 7272104), (14, 5194360), (16, 4545065), (20, 3636052), (28, 2597180), (31, 2345840), (35, 2077744), (40, 1818026), (56, 1298590), (59, 1232560), (62, 1172920), (70, 1038872), (71, 1024240), (80, 909013), (112, 649295), (118, 616280), (124, 586460), (140, 519436), (142, 512120), (155, 469168), (217, 335120), (236, 308140), (248, 293230), (280, 259718), (284, 256060), (295, 246512), (310, 234584), (355, 204848), (413, 176080), (434, 167560), (472, 154070), (496, 146615), (497, 146320), (560, 129859), (568, 128030), (590, 123256), (620, 117292), (710, 102424), (826, 88040), (868, 83780), (944, 77035), (994, 73160), (1085, 67024), (1136, 64015), (1180, 61628), (1240, 58646), (1420, 51212), (1652, 44020), (1736, 41890), (1829, 39760), (1988, 36580), (2065, 35216), (2170, 33512), (2201, 33040), (2360, 30814), (2480, 29323), (2485, 29264), (2840, 25606), (3304, 22010), (3472, 20945), (3658, 19880), (3976, 18290), (4130, 17608), (4189, 17360), (4340, 16756), (4402, 16520), (4720, 15407), (4970, 14632), (5680, 12803), (6608, 11005), (7316, 9940), (7952, 9145), (8260, 8804), (8378, 8680)]