20442320

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:204

約数の個数: 80

約数和(自身を含む): 49818240

約数和(自身を除く): 29375920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 61, 71, 80, 118, 122, 142, 236, 244, 284, 295, 305, 355, 472, 488, 568, 590, 610, 710, 944, 976, 1136, 1180, 1220, 1420, 2360, 2440, 2840, 3599, 4189, 4331, 4720, 4880, 5680, 7198, 8378, 8662, 14396, 16756, 17324, 17995, 20945, 21655, 28792, 33512, 34648, 35990, 41890, 43310, 57584, 67024, 69296, 71980, 83780, 86620, 143960, 167560, 173240, 255529, 287920, 335120, 346480, 511058, 1022116, 1277645, 2044232, 2555290, 4088464, 5110580, 10221160, 20442320]

約数ペア:

[(1, 20442320), (2, 10221160), (4, 5110580), (5, 4088464), (8, 2555290), (10, 2044232), (16, 1277645), (20, 1022116), (40, 511058), (59, 346480), (61, 335120), (71, 287920), (80, 255529), (118, 173240), (122, 167560), (142, 143960), (236, 86620), (244, 83780), (284, 71980), (295, 69296), (305, 67024), (355, 57584), (472, 43310), (488, 41890), (568, 35990), (590, 34648), (610, 33512), (710, 28792), (944, 21655), (976, 20945), (1136, 17995), (1180, 17324), (1220, 16756), (1420, 14396), (2360, 8662), (2440, 8378), (2840, 7198), (3599, 5680), (4189, 4880), (4331, 4720)]