21584560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1$

素因数の和:358

約数の個数: 80

約数和(自身を含む): 54237600

約数和(自身を除く): 32653040

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 59, 68, 80, 85, 118, 136, 170, 236, 269, 272, 295, 340, 472, 538, 590, 680, 944, 1003, 1076, 1180, 1345, 1360, 2006, 2152, 2360, 2690, 4012, 4304, 4573, 4720, 5015, 5380, 8024, 9146, 10030, 10760, 15871, 16048, 18292, 20060, 21520, 22865, 31742, 36584, 40120, 45730, 63484, 73168, 79355, 80240, 91460, 126968, 158710, 182920, 253936, 269807, 317420, 365840, 539614, 634840, 1079228, 1269680, 1349035, 2158456, 2698070, 4316912, 5396140, 10792280, 21584560]

約数ペア:

[(1, 21584560), (2, 10792280), (4, 5396140), (5, 4316912), (8, 2698070), (10, 2158456), (16, 1349035), (17, 1269680), (20, 1079228), (34, 634840), (40, 539614), (59, 365840), (68, 317420), (80, 269807), (85, 253936), (118, 182920), (136, 158710), (170, 126968), (236, 91460), (269, 80240), (272, 79355), (295, 73168), (340, 63484), (472, 45730), (538, 40120), (590, 36584), (680, 31742), (944, 22865), (1003, 21520), (1076, 20060), (1180, 18292), (1345, 16048), (1360, 15871), (2006, 10760), (2152, 10030), (2360, 9146), (2690, 8024), (4012, 5380), (4304, 5015), (4573, 4720)]