245654320

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:854

約数の個数: 80

約数和(自身を含む): 589515840

約数和(自身を除く): 343861520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 71, 80, 122, 142, 244, 284, 305, 355, 488, 568, 610, 709, 710, 976, 1136, 1220, 1418, 1420, 2440, 2836, 2840, 3545, 4331, 4880, 5672, 5680, 7090, 8662, 11344, 14180, 17324, 21655, 28360, 34648, 43249, 43310, 50339, 56720, 69296, 86498, 86620, 100678, 172996, 173240, 201356, 216245, 251695, 345992, 346480, 402712, 432490, 503390, 691984, 805424, 864980, 1006780, 1729960, 2013560, 3070679, 3459920, 4027120, 6141358, 12282716, 15353395, 24565432, 30706790, 49130864, 61413580, 122827160, 245654320]

約数ペア:

[(1, 245654320), (2, 122827160), (4, 61413580), (5, 49130864), (8, 30706790), (10, 24565432), (16, 15353395), (20, 12282716), (40, 6141358), (61, 4027120), (71, 3459920), (80, 3070679), (122, 2013560), (142, 1729960), (244, 1006780), (284, 864980), (305, 805424), (355, 691984), (488, 503390), (568, 432490), (610, 402712), (709, 346480), (710, 345992), (976, 251695), (1136, 216245), (1220, 201356), (1418, 173240), (1420, 172996), (2440, 100678), (2836, 86620), (2840, 86498), (3545, 69296), (4331, 56720), (4880, 50339), (5672, 43310), (5680, 43249), (7090, 34648), (8662, 28360), (11344, 21655), (14180, 17324)]